Solve for y
y=36
Solve for x (complex solution)
x\in \mathrm{C}
y=36
Solve for x
x\in \mathrm{R}
y=36
Graph
Share
Copied to clipboard
3x+3y-3x+4y=3\times 84-0
To find the opposite of 3x-4y, find the opposite of each term.
3y+4y=3\times 84-0
Combine 3x and -3x to get 0.
7y=3\times 84-0
Combine 3y and 4y to get 7y.
7y=252-0
Multiply 3 and 84 to get 252.
7y=252
Subtract 0 from 252 to get 252.
y=\frac{252}{7}
Divide both sides by 7.
y=36
Divide 252 by 7 to get 36.
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}