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A=0.25
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A≔0.25
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A=\left(\frac{2}{15}+\frac{12+7}{12}\right)\times \frac{30}{103}-\frac{2}{2.25}\times 0.28125
Multiply 1 and 12 to get 12.
A=\left(\frac{2}{15}+\frac{19}{12}\right)\times \frac{30}{103}-\frac{2}{2.25}\times 0.28125
Add 12 and 7 to get 19.
A=\left(\frac{8}{60}+\frac{95}{60}\right)\times \frac{30}{103}-\frac{2}{2.25}\times 0.28125
Least common multiple of 15 and 12 is 60. Convert \frac{2}{15} and \frac{19}{12} to fractions with denominator 60.
A=\frac{8+95}{60}\times \frac{30}{103}-\frac{2}{2.25}\times 0.28125
Since \frac{8}{60} and \frac{95}{60} have the same denominator, add them by adding their numerators.
A=\frac{103}{60}\times \frac{30}{103}-\frac{2}{2.25}\times 0.28125
Add 8 and 95 to get 103.
A=\frac{103\times 30}{60\times 103}-\frac{2}{2.25}\times 0.28125
Multiply \frac{103}{60} times \frac{30}{103} by multiplying numerator times numerator and denominator times denominator.
A=\frac{30}{60}-\frac{2}{2.25}\times 0.28125
Cancel out 103 in both numerator and denominator.
A=\frac{1}{2}-\frac{2}{2.25}\times 0.28125
Reduce the fraction \frac{30}{60} to lowest terms by extracting and canceling out 30.
A=\frac{1}{2}-\frac{200}{225}\times 0.28125
Expand \frac{2}{2.25} by multiplying both numerator and the denominator by 100.
A=\frac{1}{2}-\frac{8}{9}\times 0.28125
Reduce the fraction \frac{200}{225} to lowest terms by extracting and canceling out 25.
A=\frac{1}{2}-\frac{8}{9}\times \frac{9}{32}
Convert decimal number 0.28125 to fraction \frac{28125}{100000}. Reduce the fraction \frac{28125}{100000} to lowest terms by extracting and canceling out 3125.
A=\frac{1}{2}-\frac{8\times 9}{9\times 32}
Multiply \frac{8}{9} times \frac{9}{32} by multiplying numerator times numerator and denominator times denominator.
A=\frac{1}{2}-\frac{8}{32}
Cancel out 9 in both numerator and denominator.
A=\frac{1}{2}-\frac{1}{4}
Reduce the fraction \frac{8}{32} to lowest terms by extracting and canceling out 8.
A=\frac{2}{4}-\frac{1}{4}
Least common multiple of 2 and 4 is 4. Convert \frac{1}{2} and \frac{1}{4} to fractions with denominator 4.
A=\frac{2-1}{4}
Since \frac{2}{4} and \frac{1}{4} have the same denominator, subtract them by subtracting their numerators.
A=\frac{1}{4}
Subtract 1 from 2 to get 1.
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Linear equation
y = 3x + 4
Arithmetic
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Matrix
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Simultaneous equation
\left. \begin{cases} { 8x+2y = 46 } \\ { 7x+3y = 47 } \end{cases} \right.
Differentiation
\frac { d } { d x } \frac { ( 3 x ^ { 2 } - 2 ) } { ( x - 5 ) }
Integration
\int _ { 0 } ^ { 1 } x e ^ { - x ^ { 2 } } d x
Limits
\lim _{x \rightarrow-3} \frac{x^{2}-9}{x^{2}+2 x-3}