(4*7*2)+(2*2*a)=72

Solution for (4*7*2)+(2*2*a)=72 equation:

Simplifying
(4 * 7 * 2) + (2 * 2a) = 72

Multiply 4 * 7
(28 * 2) + (2 * 2a) = 72

Multiply 28 * 2
(56) + (2 * 2a) = 72
56 + (2 * 2a) = 72

Multiply 2 * 2
56 + (4a) = 72

Solving
56 + (4a) = 72

Solving for variable 'a'.

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

Add '-56' to each side of the equation.
56 + -56 + (4a) = 72 + -56

Combine like terms: 56 + -56 = 0
0 + (4a) = 72 + -56
(4a) = 72 + -56

Combine like terms: 72 + -56 = 16
(4a) = 16

Divide each side by '4'.
a = 4

Simplifying
a = 4