Question

13 + w/7 = –18

Answer 1

13+(w)/(7)=-18

Since 13 does not contain the variable to solve for, move it to the right-hand side of the equation by subtracting 13 from both sides.
(w)/(7)=-13-18

Subtract 18 from -13 to get -31.
(w)/(7)=-31

Multiply each term in the equation by 7.
(w)/(7)*7=-31*7

Simplify the left-hand side of the equation by canceling the common factors.
w=-31*7

Multiply -31 by 7 to get -217.
w=-217