Rearrange the equation by subtracting what is to the right of the equal sign from both sides of the equation : -243-(-9*(10+x))=0 -243 - (0 - 9 • (x + 10)) = 0 9x - 153 = 9 • (x - 17)
Equation at the end of step 3 : 9 • (x - 17) = 0
Step 4
Solve: x-17 = 0 Add 17 to both sides of the equation : x = 17
