7a-3(a-2)=18

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Solution for 7a-3(a-2)=18 equation:


Simplifying
7a + -3(a + -2) = 18

Reorder the terms:
7a + -3(-2 + a) = 18
7a + (-2 * -3 + a * -3) = 18
7a + (6 + -3a) = 18

Reorder the terms:
6 + 7a + -3a = 18

Combine like terms: 7a + -3a = 4a
6 + 4a = 18

Solving
6 + 4a = 18

Solving for variable 'a'.

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

Add '-6' to each side of the equation.
6 + -6 + 4a = 18 + -6

Combine like terms: 6 + -6 = 0
0 + 4a = 18 + -6
4a = 18 + -6

Combine like terms: 18 + -6 = 12
4a = 12

Divide each side by '4'.
a = 3

Simplifying
a = 3

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