7a+3=4a-18

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Solution for 7a+3=4a-18 equation:


Simplifying
7a + 3 = 4a + -18

Reorder the terms:
3 + 7a = 4a + -18

Reorder the terms:
3 + 7a = -18 + 4a

Solving
3 + 7a = -18 + 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.
3 + 7a + -4a = -18 + 4a + -4a

Combine like terms: 7a + -4a = 3a
3 + 3a = -18 + 4a + -4a

Combine like terms: 4a + -4a = 0
3 + 3a = -18 + 0
3 + 3a = -18

Add '-3' to each side of the equation.
3 + -3 + 3a = -18 + -3

Combine like terms: 3 + -3 = 0
0 + 3a = -18 + -3
3a = -18 + -3

Combine like terms: -18 + -3 = -21
3a = -21

Divide each side by '3'.
a = -7

Simplifying
a = -7

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