Solve for x
x = \frac{87}{4} = 21\frac{3}{4} = 21.75
Graph
Share
Copied to clipboard
4x+2x-1+2x-1+3+3=178
Combine 2x and 2x to get 4x.
6x-1+2x-1+3+3=178
Combine 4x and 2x to get 6x.
8x-1-1+3+3=178
Combine 6x and 2x to get 8x.
8x-2+3+3=178
Subtract 1 from -1 to get -2.
8x+1+3=178
Add -2 and 3 to get 1.
8x+4=178
Add 1 and 3 to get 4.
8x=178-4
Subtract 4 from both sides.
8x=174
Subtract 4 from 178 to get 174.
x=\frac{174}{8}
Divide both sides by 8.
x=\frac{87}{4}
Reduce the fraction \frac{174}{8} to lowest terms by extracting and canceling out 2.
Examples
Quadratic equation
{ x } ^ { 2 } - 4 x - 5 = 0
Trigonometry
4 \sin \theta \cos \theta = 2 \sin \theta
Linear equation
y = 3x + 4
Arithmetic
699 * 533
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}