2a+45=3a-20

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Solution for 2a+45=3a-20 equation:


Simplifying
2a + 45 = 3a + -20

Reorder the terms:
45 + 2a = 3a + -20

Reorder the terms:
45 + 2a = -20 + 3a

Solving
45 + 2a = -20 + 3a

Solving for variable 'a'.

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

Add '-3a' to each side of the equation.
45 + 2a + -3a = -20 + 3a + -3a

Combine like terms: 2a + -3a = -1a
45 + -1a = -20 + 3a + -3a

Combine like terms: 3a + -3a = 0
45 + -1a = -20 + 0
45 + -1a = -20

Add '-45' to each side of the equation.
45 + -45 + -1a = -20 + -45

Combine like terms: 45 + -45 = 0
0 + -1a = -20 + -45
-1a = -20 + -45

Combine like terms: -20 + -45 = -65
-1a = -65

Divide each side by '-1'.
a = 65

Simplifying
a = 65

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