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

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


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

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

Reorder the terms:
-18 + 7a = -3(3 + -3a) + 7a
-18 + 7a = (3 * -3 + -3a * -3) + 7a
-18 + 7a = (-9 + 9a) + 7a

Combine like terms: 9a + 7a = 16a
-18 + 7a = -9 + 16a

Solving
-18 + 7a = -9 + 16a

Solving for variable 'a'.

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

Add '-16a' to each side of the equation.
-18 + 7a + -16a = -9 + 16a + -16a

Combine like terms: 7a + -16a = -9a
-18 + -9a = -9 + 16a + -16a

Combine like terms: 16a + -16a = 0
-18 + -9a = -9 + 0
-18 + -9a = -9

Add '18' to each side of the equation.
-18 + 18 + -9a = -9 + 18

Combine like terms: -18 + 18 = 0
0 + -9a = -9 + 18
-9a = -9 + 18

Combine like terms: -9 + 18 = 9
-9a = 9

Divide each side by '-9'.
a = -1

Simplifying
a = -1

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