7(3a+1)-30=3(2a-4)

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Solution for 7(3a+1)-30=3(2a-4) equation:


Simplifying
7(3a + 1) + -30 = 3(2a + -4)

Reorder the terms:
7(1 + 3a) + -30 = 3(2a + -4)
(1 * 7 + 3a * 7) + -30 = 3(2a + -4)
(7 + 21a) + -30 = 3(2a + -4)

Reorder the terms:
7 + -30 + 21a = 3(2a + -4)

Combine like terms: 7 + -30 = -23
-23 + 21a = 3(2a + -4)

Reorder the terms:
-23 + 21a = 3(-4 + 2a)
-23 + 21a = (-4 * 3 + 2a * 3)
-23 + 21a = (-12 + 6a)

Solving
-23 + 21a = -12 + 6a

Solving for variable 'a'.

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

Add '-6a' to each side of the equation.
-23 + 21a + -6a = -12 + 6a + -6a

Combine like terms: 21a + -6a = 15a
-23 + 15a = -12 + 6a + -6a

Combine like terms: 6a + -6a = 0
-23 + 15a = -12 + 0
-23 + 15a = -12

Add '23' to each side of the equation.
-23 + 23 + 15a = -12 + 23

Combine like terms: -23 + 23 = 0
0 + 15a = -12 + 23
15a = -12 + 23

Combine like terms: -12 + 23 = 11
15a = 11

Divide each side by '15'.
a = 0.7333333333

Simplifying
a = 0.7333333333

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