7a-2-8a=5a+10-8a+20

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Solution for 7a-2-8a=5a+10-8a+20 equation:


Simplifying
7a + -2 + -8a = 5a + 10 + -8a + 20

Reorder the terms:
-2 + 7a + -8a = 5a + 10 + -8a + 20

Combine like terms: 7a + -8a = -1a
-2 + -1a = 5a + 10 + -8a + 20

Reorder the terms:
-2 + -1a = 10 + 20 + 5a + -8a

Combine like terms: 10 + 20 = 30
-2 + -1a = 30 + 5a + -8a

Combine like terms: 5a + -8a = -3a
-2 + -1a = 30 + -3a

Solving
-2 + -1a = 30 + -3a

Solving for variable 'a'.

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

Add '3a' to each side of the equation.
-2 + -1a + 3a = 30 + -3a + 3a

Combine like terms: -1a + 3a = 2a
-2 + 2a = 30 + -3a + 3a

Combine like terms: -3a + 3a = 0
-2 + 2a = 30 + 0
-2 + 2a = 30

Add '2' to each side of the equation.
-2 + 2 + 2a = 30 + 2

Combine like terms: -2 + 2 = 0
0 + 2a = 30 + 2
2a = 30 + 2

Combine like terms: 30 + 2 = 32
2a = 32

Divide each side by '2'.
a = 16

Simplifying
a = 16

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