8(a+2)-7a+9=20

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Solution for 8(a+2)-7a+9=20 equation:


Simplifying
8(a + 2) + -7a + 9 = 20

Reorder the terms:
8(2 + a) + -7a + 9 = 20
(2 * 8 + a * 8) + -7a + 9 = 20
(16 + 8a) + -7a + 9 = 20

Reorder the terms:
16 + 9 + 8a + -7a = 20

Combine like terms: 16 + 9 = 25
25 + 8a + -7a = 20

Combine like terms: 8a + -7a = 1a
25 + 1a = 20

Solving
25 + 1a = 20

Solving for variable 'a'.

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

Add '-25' to each side of the equation.
25 + -25 + 1a = 20 + -25

Combine like terms: 25 + -25 = 0
0 + 1a = 20 + -25
1a = 20 + -25

Combine like terms: 20 + -25 = -5
1a = -5

Divide each side by '1'.
a = -5

Simplifying
a = -5

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