3(a+7)=2(a-6)

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Solution for 3(a+7)=2(a-6) equation:


Simplifying
3(a + 7) = 2(a + -6)

Reorder the terms:
3(7 + a) = 2(a + -6)
(7 * 3 + a * 3) = 2(a + -6)
(21 + 3a) = 2(a + -6)

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

Solving
21 + 3a = -12 + 2a

Solving for variable 'a'.

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

Add '-2a' to each side of the equation.
21 + 3a + -2a = -12 + 2a + -2a

Combine like terms: 3a + -2a = 1a
21 + 1a = -12 + 2a + -2a

Combine like terms: 2a + -2a = 0
21 + 1a = -12 + 0
21 + 1a = -12

Add '-21' to each side of the equation.
21 + -21 + 1a = -12 + -21

Combine like terms: 21 + -21 = 0
0 + 1a = -12 + -21
1a = -12 + -21

Combine like terms: -12 + -21 = -33
1a = -33

Divide each side by '1'.
a = -33

Simplifying
a = -33

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