Solve for x
x=\frac{y}{5}
Solve for y
y=5x
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10y-9x-y=\frac{100x+y-10y-x}{1.5}
Combine x and -10x to get -9x.
9y-9x=\frac{100x+y-10y-x}{1.5}
Combine 10y and -y to get 9y.
9y-9x=\frac{100x-9y-x}{1.5}
Combine y and -10y to get -9y.
9y-9x=\frac{99x-9y}{1.5}
Combine 100x and -x to get 99x.
9y-9x=\frac{99x}{1.5}+\frac{-9y}{1.5}
Divide each term of 99x-9y by 1.5 to get \frac{99x}{1.5}+\frac{-9y}{1.5}.
9y-9x=66x+\frac{-9y}{1.5}
Divide 99x by 1.5 to get 66x.
9y-9x=66x-6y
Divide -9y by 1.5 to get -6y.
9y-9x-66x=-6y
Subtract 66x from both sides.
9y-75x=-6y
Combine -9x and -66x to get -75x.
-75x=-6y-9y
Subtract 9y from both sides.
-75x=-15y
Combine -6y and -9y to get -15y.
\frac{-75x}{-75}=-\frac{15y}{-75}
Divide both sides by -75.
x=-\frac{15y}{-75}
Dividing by -75 undoes the multiplication by -75.
x=\frac{y}{5}
Divide -15y by -75.
10y-9x-y=\frac{100x+y-10y-x}{1.5}
Combine x and -10x to get -9x.
9y-9x=\frac{100x+y-10y-x}{1.5}
Combine 10y and -y to get 9y.
9y-9x=\frac{100x-9y-x}{1.5}
Combine y and -10y to get -9y.
9y-9x=\frac{99x-9y}{1.5}
Combine 100x and -x to get 99x.
9y-9x=\frac{99x}{1.5}+\frac{-9y}{1.5}
Divide each term of 99x-9y by 1.5 to get \frac{99x}{1.5}+\frac{-9y}{1.5}.
9y-9x=66x+\frac{-9y}{1.5}
Divide 99x by 1.5 to get 66x.
9y-9x=66x-6y
Divide -9y by 1.5 to get -6y.
9y-9x+6y=66x
Add 6y to both sides.
15y-9x=66x
Combine 9y and 6y to get 15y.
15y=66x+9x
Add 9x to both sides.
15y=75x
Combine 66x and 9x to get 75x.
\frac{15y}{15}=\frac{75x}{15}
Divide both sides by 15.
y=\frac{75x}{15}
Dividing by 15 undoes the multiplication by 15.
y=5x
Divide 75x by 15.
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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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