Solve for x
x = -\frac{51}{23} = -2\frac{5}{23} \approx -2.217391304
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Linear Equation
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\frac { x + 2 } { 5 } - \frac { 3 ( x - 1 ) } { 2 } = x + 7
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2\left(x+2\right)-5\times 3\left(x-1\right)=10x+70
Multiply both sides of the equation by 10, the least common multiple of 5,2.
2x+4-5\times 3\left(x-1\right)=10x+70
Use the distributive property to multiply 2 by x+2.
2x+4-15\left(x-1\right)=10x+70
Multiply -5 and 3 to get -15.
2x+4-15x+15=10x+70
Use the distributive property to multiply -15 by x-1.
-13x+4+15=10x+70
Combine 2x and -15x to get -13x.
-13x+19=10x+70
Add 4 and 15 to get 19.
-13x+19-10x=70
Subtract 10x from both sides.
-23x+19=70
Combine -13x and -10x to get -23x.
-23x=70-19
Subtract 19 from both sides.
-23x=51
Subtract 19 from 70 to get 51.
x=\frac{51}{-23}
Divide both sides by -23.
x=-\frac{51}{23}
Fraction \frac{51}{-23} can be rewritten as -\frac{51}{23} by extracting the negative sign.
Examples
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{ x } ^ { 2 } - 4 x - 5 = 0
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4 \sin \theta \cos \theta = 2 \sin \theta
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y = 3x + 4
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\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}