Question

A = 1/2(a+x)h solve for x

Answer 1

For this case we have the following equation:

`A = \frac {1} {2} (a + x) * h`

We must clear the variable "x":

We multiply by 2 on both sides of the equation:

`2A = (a + x) * h`

We divide by h on both sides of the equation:

`\frac {2A} {h} = a + x`

We subtract "a" on both sides of the equation:
`\frac {2A} {h} -a = x`

Answer:
`x = \frac {2A} {h} -a`