Solve for x
x=3
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\left(x+1\right)\times 3+\left(2x-2\right)\times 5=\left(2x+2\right)\times 4
Variable x cannot be equal to any of the values -1,1 since division by zero is not defined. Multiply both sides of the equation by 2\left(x-1\right)\left(x+1\right), the least common multiple of 2x-2,x+1,x-1.
3x+3+\left(2x-2\right)\times 5=\left(2x+2\right)\times 4
Use the distributive property to multiply x+1 by 3.
3x+3+10x-10=\left(2x+2\right)\times 4
Use the distributive property to multiply 2x-2 by 5.
13x+3-10=\left(2x+2\right)\times 4
Combine 3x and 10x to get 13x.
13x-7=\left(2x+2\right)\times 4
Subtract 10 from 3 to get -7.
13x-7=8x+8
Use the distributive property to multiply 2x+2 by 4.
13x-7-8x=8
Subtract 8x from both sides.
5x-7=8
Combine 13x and -8x to get 5x.
5x=8+7
Add 7 to both sides.
5x=15
Add 8 and 7 to get 15.
x=\frac{15}{5}
Divide both sides by 5.
x=3
Divide 15 by 5 to get 3.
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}