7a-5=2a-20

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Solution for 7a-5=2a-20 equation:


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

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

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

Solving
-5 + 7a = -20 + 2a

Solving for variable 'a'.

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

Add '-2a' to each side of the equation.
-5 + 7a + -2a = -20 + 2a + -2a

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

Combine like terms: 2a + -2a = 0
-5 + 5a = -20 + 0
-5 + 5a = -20

Add '5' to each side of the equation.
-5 + 5 + 5a = -20 + 5

Combine like terms: -5 + 5 = 0
0 + 5a = -20 + 5
5a = -20 + 5

Combine like terms: -20 + 5 = -15
5a = -15

Divide each side by '5'.
a = -3

Simplifying
a = -3

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