42=onehalfH(5+2)

Solution for 42=onehalfH(5+2) equation:

Simplifying
42 = onehalfH(5 + 2)

Combine like terms: 5 + 2 = 7
42 = aefhlnoH(7)

Reorder the terms for easier multiplication:
42 = 7aefhlnoH

Solving
42 = 7aefhlnoH

Solving for variable 'a'.

Move all terms containing a to the left, all other terms to the right.

Add '-7aefhlnoH' to each side of the equation.
42 + -7aefhlnoH = 7aefhlnoH + -7aefhlnoH

Combine like terms: 7aefhlnoH + -7aefhlnoH = 0
42 + -7aefhlnoH = 0

Add '-42' to each side of the equation.
42 + -42 + -7aefhlnoH = 0 + -42

Combine like terms: 42 + -42 = 0
0 + -7aefhlnoH = 0 + -42
-7aefhlnoH = 0 + -42

Combine like terms: 0 + -42 = -42
-7aefhlnoH = -42

Divide each side by '-7efhlnoH'.
a = 6e-1f-1h-1l-1n-1o-1H-1

Simplifying
a = 6e-1f-1h-1l-1n-1o-1H-1