(5a+1)(9-5)+7=31

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Solution for (5a+1)(9-5)+7=31 equation:


Simplifying
(5a + 1)(9 + -5) + 7 = 31

Reorder the terms:
(1 + 5a)(9 + -5) + 7 = 31

Combine like terms: 9 + -5 = 4
(1 + 5a)(4) + 7 = 31

Reorder the terms for easier multiplication:
4(1 + 5a) + 7 = 31
(1 * 4 + 5a * 4) + 7 = 31
(4 + 20a) + 7 = 31

Reorder the terms:
4 + 7 + 20a = 31

Combine like terms: 4 + 7 = 11
11 + 20a = 31

Solving
11 + 20a = 31

Solving for variable 'a'.

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

Add '-11' to each side of the equation.
11 + -11 + 20a = 31 + -11

Combine like terms: 11 + -11 = 0
0 + 20a = 31 + -11
20a = 31 + -11

Combine like terms: 31 + -11 = 20
20a = 20

Divide each side by '20'.
a = 1

Simplifying
a = 1

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