Solve for x
x=-7
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2x+10=\frac{2}{5}\left(x-3\right)
Use the distributive property to multiply 2 by x+5.
2x+10=\frac{2}{5}x+\frac{2}{5}\left(-3\right)
Use the distributive property to multiply \frac{2}{5} by x-3.
2x+10=\frac{2}{5}x+\frac{2\left(-3\right)}{5}
Express \frac{2}{5}\left(-3\right) as a single fraction.
2x+10=\frac{2}{5}x+\frac{-6}{5}
Multiply 2 and -3 to get -6.
2x+10=\frac{2}{5}x-\frac{6}{5}
Fraction \frac{-6}{5} can be rewritten as -\frac{6}{5} by extracting the negative sign.
2x+10-\frac{2}{5}x=-\frac{6}{5}
Subtract \frac{2}{5}x from both sides.
\frac{8}{5}x+10=-\frac{6}{5}
Combine 2x and -\frac{2}{5}x to get \frac{8}{5}x.
\frac{8}{5}x=-\frac{6}{5}-10
Subtract 10 from both sides.
\frac{8}{5}x=-\frac{6}{5}-\frac{50}{5}
Convert 10 to fraction \frac{50}{5}.
\frac{8}{5}x=\frac{-6-50}{5}
Since -\frac{6}{5} and \frac{50}{5} have the same denominator, subtract them by subtracting their numerators.
\frac{8}{5}x=-\frac{56}{5}
Subtract 50 from -6 to get -56.
x=-\frac{56}{5}\times \frac{5}{8}
Multiply both sides by \frac{5}{8}, the reciprocal of \frac{8}{5}.
x=\frac{-56\times 5}{5\times 8}
Multiply -\frac{56}{5} times \frac{5}{8} by multiplying numerator times numerator and denominator times denominator.
x=\frac{-56}{8}
Cancel out 5 in both numerator and denominator.
x=-7
Divide -56 by 8 to get -7.
Examples
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{ x } ^ { 2 } - 4 x - 5 = 0
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Linear equation
y = 3x + 4
Arithmetic
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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
\lim _{x \rightarrow-3} \frac{x^{2}-9}{x^{2}+2 x-3}