3(4-3a)+7a=18

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


Simplifying
3(4 + -3a) + 7a = 18
(4 * 3 + -3a * 3) + 7a = 18
(12 + -9a) + 7a = 18

Combine like terms: -9a + 7a = -2a
12 + -2a = 18

Solving
12 + -2a = 18

Solving for variable 'a'.

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

Add '-12' to each side of the equation.
12 + -12 + -2a = 18 + -12

Combine like terms: 12 + -12 = 0
0 + -2a = 18 + -12
-2a = 18 + -12

Combine like terms: 18 + -12 = 6
-2a = 6

Divide each side by '-2'.
a = -3

Simplifying
a = -3

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