Solve for a
a=1
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45\left(\frac{a}{5}+\frac{4}{15}a\right)-6a=5\left(2a+1\right)
Multiply both sides of the equation by 45, the least common multiple of 5,15,45,9.
45\times \frac{7}{15}a-6a=5\left(2a+1\right)
Combine \frac{a}{5} and \frac{4}{15}a to get \frac{7}{15}a.
\frac{45\times 7}{15}a-6a=5\left(2a+1\right)
Express 45\times \frac{7}{15} as a single fraction.
\frac{315}{15}a-6a=5\left(2a+1\right)
Multiply 45 and 7 to get 315.
21a-6a=5\left(2a+1\right)
Divide 315 by 15 to get 21.
15a=5\left(2a+1\right)
Combine 21a and -6a to get 15a.
15a=10a+5
Use the distributive property to multiply 5 by 2a+1.
15a-10a=5
Subtract 10a from both sides.
5a=5
Combine 15a and -10a to get 5a.
a=\frac{5}{5}
Divide both sides by 5.
a=1
Divide 5 by 5 to get 1.
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y = 3x + 4
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Matrix
\left[ \begin{array} { l l } { 2 } & { 3 } \\ { 5 } & { 4 } \end{array} \right] \left[ \begin{array} { l l l } { 2 } & { 0 } & { 3 } \\ { -1 } & { 1 } & { 5 } \end{array} \right]
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
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