2(5-a)2+7a=

Solution for 2(5-a)2+7a= equation:

Simplifying
2(5 + -1a) * 2 + 7a = 0

Reorder the terms for easier multiplication:
2 * 2(5 + -1a) + 7a = 0

Multiply 2 * 2
4(5 + -1a) + 7a = 0
(5 * 4 + -1a * 4) + 7a = 0
(20 + -4a) + 7a = 0

Combine like terms: -4a + 7a = 3a
20 + 3a = 0

Solving
20 + 3a = 0

Solving for variable 'a'.

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

Add '-20' to each side of the equation.
20 + -20 + 3a = 0 + -20

Combine like terms: 20 + -20 = 0
0 + 3a = 0 + -20
3a = 0 + -20

Combine like terms: 0 + -20 = -20
3a = -20

Divide each side by '3'.
a = -6.666666667

Simplifying
a = -6.666666667