13=3a+5-2a-7

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Solution for 13=3a+5-2a-7 equation:


Simplifying
13 = 3a + 5 + -2a + -7

Reorder the terms:
13 = 5 + -7 + 3a + -2a

Combine like terms: 5 + -7 = -2
13 = -2 + 3a + -2a

Combine like terms: 3a + -2a = 1a
13 = -2 + 1a

Solving
13 = -2 + 1a

Solving for variable 'a'.

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

Add '-1a' to each side of the equation.
13 + -1a = -2 + 1a + -1a

Combine like terms: 1a + -1a = 0
13 + -1a = -2 + 0
13 + -1a = -2

Add '-13' to each side of the equation.
13 + -13 + -1a = -2 + -13

Combine like terms: 13 + -13 = 0
0 + -1a = -2 + -13
-1a = -2 + -13

Combine like terms: -2 + -13 = -15
-1a = -15

Divide each side by '-1'.
a = 15

Simplifying
a = 15

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