7a-15=2a+45

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Solution for 7a-15=2a+45 equation:


Simplifying
7a + -15 = 2a + 45

Reorder the terms:
-15 + 7a = 2a + 45

Reorder the terms:
-15 + 7a = 45 + 2a

Solving
-15 + 7a = 45 + 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.
-15 + 7a + -2a = 45 + 2a + -2a

Combine like terms: 7a + -2a = 5a
-15 + 5a = 45 + 2a + -2a

Combine like terms: 2a + -2a = 0
-15 + 5a = 45 + 0
-15 + 5a = 45

Add '15' to each side of the equation.
-15 + 15 + 5a = 45 + 15

Combine like terms: -15 + 15 = 0
0 + 5a = 45 + 15
5a = 45 + 15

Combine like terms: 45 + 15 = 60
5a = 60

Divide each side by '5'.
a = 12

Simplifying
a = 12

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