Solve for x
x=2\left(y-5\right)
Solve for y
y=\frac{x+10}{2}
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170-x+2y=180
Add 45 and 125 to get 170.
-x+2y=180-170
Subtract 170 from both sides.
-x+2y=10
Subtract 170 from 180 to get 10.
-x=10-2y
Subtract 2y from both sides.
\frac{-x}{-1}=\frac{10-2y}{-1}
Divide both sides by -1.
x=\frac{10-2y}{-1}
Dividing by -1 undoes the multiplication by -1.
x=2y-10
Divide 10-2y by -1.
170-x+2y=180
Add 45 and 125 to get 170.
-x+2y=180-170
Subtract 170 from both sides.
-x+2y=10
Subtract 170 from 180 to get 10.
2y=10+x
Add x to both sides.
2y=x+10
The equation is in standard form.
\frac{2y}{2}=\frac{x+10}{2}
Divide both sides by 2.
y=\frac{x+10}{2}
Dividing by 2 undoes the multiplication by 2.
y=\frac{x}{2}+5
Divide 10+x by 2.
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