Solve for y
y=2
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4y-4=y+2
Multiply both sides of the equation by 8, the least common multiple of 2,8,4.
4y-4-y=2
Subtract y from both sides.
3y-4=2
Combine 4y and -y to get 3y.
3y=2+4
Add 4 to both sides.
3y=6
Add 2 and 4 to get 6.
y=\frac{6}{3}
Divide both sides by 3.
y=2
Divide 6 by 3 to get 2.
Examples
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y = 3x + 4
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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
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