Solve for x
x=-5
Graph
Share
Copied to clipboard
5x+\frac{7}{2}-\frac{3}{2}x=-14
Subtract \frac{3}{2}x from both sides.
\frac{7}{2}x+\frac{7}{2}=-14
Combine 5x and -\frac{3}{2}x to get \frac{7}{2}x.
\frac{7}{2}x=-14-\frac{7}{2}
Subtract \frac{7}{2} from both sides.
\frac{7}{2}x=-\frac{28}{2}-\frac{7}{2}
Convert -14 to fraction -\frac{28}{2}.
\frac{7}{2}x=\frac{-28-7}{2}
Since -\frac{28}{2} and \frac{7}{2} have the same denominator, subtract them by subtracting their numerators.
\frac{7}{2}x=-\frac{35}{2}
Subtract 7 from -28 to get -35.
x=-\frac{35}{2}\times \frac{2}{7}
Multiply both sides by \frac{2}{7}, the reciprocal of \frac{7}{2}.
x=\frac{-35\times 2}{2\times 7}
Multiply -\frac{35}{2} times \frac{2}{7} by multiplying numerator times numerator and denominator times denominator.
x=\frac{-35}{7}
Cancel out 2 in both numerator and denominator.
x=-5
Divide -35 by 7 to get -5.
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}