Solve for y
y = \frac{455}{19} = 23\frac{18}{19} \approx 23.947368421
Graph
Share
Copied to clipboard
\left(40-2\right)\left(y-5\right)=720
Divide 720 by 18 to get 40.
38\left(y-5\right)=720
Subtract 2 from 40 to get 38.
38y-190=720
Use the distributive property to multiply 38 by y-5.
38y=720+190
Add 190 to both sides.
38y=910
Add 720 and 190 to get 910.
y=\frac{910}{38}
Divide both sides by 38.
y=\frac{455}{19}
Reduce the fraction \frac{910}{38} 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}