⓵
Replace the w with it’s value in the equation :
w⒳ = -2x + 1
-7 = -2x + 1
⓶
Then, you just simplify the right side in order to isolate the x (always take in consideration your priorities of operation) :
-7 = -2x + 1
÷-2 ÷-2
3.5 = x + 1
-1 -1
2.5 = x ☻
