Answer:
see explanation
Step-by-step explanation:
Given
A = [tex]\frac{1}{2}[/tex] h(x + y)
Multiply both sides by 2 to eliminate the fraction
2A = h(x + y) ( divide both sides by h )
[tex]\frac{2A}{h}[/tex] = x + y ( subtract x from both sides )
y = [tex]\frac{2A}{h}[/tex] - x