3(3a-7)-3(1-7a)=-54

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Solution for 3(3a-7)-3(1-7a)=-54 equation:


Simplifying
3(3a + -7) + -3(1 + -7a) = -54

Reorder the terms:
3(-7 + 3a) + -3(1 + -7a) = -54
(-7 * 3 + 3a * 3) + -3(1 + -7a) = -54
(-21 + 9a) + -3(1 + -7a) = -54
-21 + 9a + (1 * -3 + -7a * -3) = -54
-21 + 9a + (-3 + 21a) = -54

Reorder the terms:
-21 + -3 + 9a + 21a = -54

Combine like terms: -21 + -3 = -24
-24 + 9a + 21a = -54

Combine like terms: 9a + 21a = 30a
-24 + 30a = -54

Solving
-24 + 30a = -54

Solving for variable 'a'.

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

Add '24' to each side of the equation.
-24 + 24 + 30a = -54 + 24

Combine like terms: -24 + 24 = 0
0 + 30a = -54 + 24
30a = -54 + 24

Combine like terms: -54 + 24 = -30
30a = -30

Divide each side by '30'.
a = -1

Simplifying
a = -1

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