5a+15=4a+36

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Solution for 5a+15=4a+36 equation:


Simplifying
5a + 15 = 4a + 36

Reorder the terms:
15 + 5a = 4a + 36

Reorder the terms:
15 + 5a = 36 + 4a

Solving
15 + 5a = 36 + 4a

Solving for variable 'a'.

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

Add '-4a' to each side of the equation.
15 + 5a + -4a = 36 + 4a + -4a

Combine like terms: 5a + -4a = 1a
15 + 1a = 36 + 4a + -4a

Combine like terms: 4a + -4a = 0
15 + 1a = 36 + 0
15 + 1a = 36

Add '-15' to each side of the equation.
15 + -15 + 1a = 36 + -15

Combine like terms: 15 + -15 = 0
0 + 1a = 36 + -15
1a = 36 + -15

Combine like terms: 36 + -15 = 21
1a = 21

Divide each side by '1'.
a = 21

Simplifying
a = 21

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