a+7=2a-45

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


Simplifying
a + 7 = 2a + -45

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

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

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

Combine like terms: a + -2a = -1a
7 + -1a = -45 + 2a + -2a

Combine like terms: 2a + -2a = 0
7 + -1a = -45 + 0
7 + -1a = -45

Add '-7' to each side of the equation.
7 + -7 + -1a = -45 + -7

Combine like terms: 7 + -7 = 0
0 + -1a = -45 + -7
-1a = -45 + -7

Combine like terms: -45 + -7 = -52
-1a = -52

Divide each side by '-1'.
a = 52

Simplifying
a = 52

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