a-3=3a-7

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Solution for a-3=3a-7 equation:


Simplifying
a + -3 = 3a + -7

Reorder the terms:
-3 + a = 3a + -7

Reorder the terms:
-3 + a = -7 + 3a

Solving
-3 + a = -7 + 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.
-3 + a + -3a = -7 + 3a + -3a

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

Combine like terms: 3a + -3a = 0
-3 + -2a = -7 + 0
-3 + -2a = -7

Add '3' to each side of the equation.
-3 + 3 + -2a = -7 + 3

Combine like terms: -3 + 3 = 0
0 + -2a = -7 + 3
-2a = -7 + 3

Combine like terms: -7 + 3 = -4
-2a = -4

Divide each side by '-2'.
a = 2

Simplifying
a = 2

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