5(3a+1)-3(a-7)=16+7a

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Solution for 5(3a+1)-3(a-7)=16+7a equation:


Simplifying
5(3a + 1) + -3(a + -7) = 16 + 7a

Reorder the terms:
5(1 + 3a) + -3(a + -7) = 16 + 7a
(1 * 5 + 3a * 5) + -3(a + -7) = 16 + 7a
(5 + 15a) + -3(a + -7) = 16 + 7a

Reorder the terms:
5 + 15a + -3(-7 + a) = 16 + 7a
5 + 15a + (-7 * -3 + a * -3) = 16 + 7a
5 + 15a + (21 + -3a) = 16 + 7a

Reorder the terms:
5 + 21 + 15a + -3a = 16 + 7a

Combine like terms: 5 + 21 = 26
26 + 15a + -3a = 16 + 7a

Combine like terms: 15a + -3a = 12a
26 + 12a = 16 + 7a

Solving
26 + 12a = 16 + 7a

Solving for variable 'a'.

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

Add '-7a' to each side of the equation.
26 + 12a + -7a = 16 + 7a + -7a

Combine like terms: 12a + -7a = 5a
26 + 5a = 16 + 7a + -7a

Combine like terms: 7a + -7a = 0
26 + 5a = 16 + 0
26 + 5a = 16

Add '-26' to each side of the equation.
26 + -26 + 5a = 16 + -26

Combine like terms: 26 + -26 = 0
0 + 5a = 16 + -26
5a = 16 + -26

Combine like terms: 16 + -26 = -10
5a = -10

Divide each side by '5'.
a = -2

Simplifying
a = -2

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