Simplify both sides then isolate the variable and it gives you y=3.6
Step-by-step explanation:
step 1. properties of equality have an "=" in the equation.
step 2. properties of inequality have a <, <=, >=, or a >.
9 = -7-2y
9 +7=16
16/-2 -2y/-2
-8 = y
The answer is 12cm because area (420) divided bye height (35) gives you the corresponding side 12cm.
