Question 345945
2Y-3+Y=180_X+Y=180

Since 2Y and Y are like terms, add Y to 2Y to get 3Y.
3Y-3=180_X+Y=180

Since -3 does not contain the variable to solve for, move it to the right-hand side of the equation by adding 3 to both sides.
3Y=3+180_X+Y=180

Add 180 to 3 to get 183.
3Y=183_X+Y=180

Divide each term in the equation by 3.
(3Y)/(3)=(183)/(3)_X+Y=180

Simplify the left-hand side of the equation by canceling the common factors.
Y=(183)/(3)_X+Y=180

Simplify the right-hand side of the equation by simplifying each term.
Y=61_X+Y=180

Replace all occurrences of Y with the solution found by solving the last equation for Y.  In this case, the value substituted is 61.
Y=61_X+(61)=180

Remove the parentheses around the expression 61.
Y=61_X+61=180

Since 61 does not contain the variable to solve for, move it to the right-hand side of the equation by subtracting 61 from both sides.
Y=61_X=-61+180

Add 180 to -61 to get 119.
Y=61_X=119

Replace all occurrences of Y with the solution found by solving the last equation for Y.  In this case, the value substituted is 61.
Y=61_X=119