Solve for y
y=-15
Graph
Share
Copied to clipboard
\frac{9}{2}+\frac{5}{2}y-2y=-3
Subtract 2y from both sides.
\frac{9}{2}+\frac{1}{2}y=-3
Combine \frac{5}{2}y and -2y to get \frac{1}{2}y.
\frac{1}{2}y=-3-\frac{9}{2}
Subtract \frac{9}{2} from both sides.
\frac{1}{2}y=-\frac{6}{2}-\frac{9}{2}
Convert -3 to fraction -\frac{6}{2}.
\frac{1}{2}y=\frac{-6-9}{2}
Since -\frac{6}{2} and \frac{9}{2} have the same denominator, subtract them by subtracting their numerators.
\frac{1}{2}y=-\frac{15}{2}
Subtract 9 from -6 to get -15.
y=-\frac{15}{2}\times 2
Multiply both sides by 2, the reciprocal of \frac{1}{2}.
y=-15
Cancel out 2 and 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}