3*(a+4)+b-5-a+7*(b-3)=

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Solution for 3*(a+4)+b-5-a+7*(b-3)= equation:


Simplifying
3(a + 4) + b + -5 + -1a + 7(b + -3) = 0

Reorder the terms:
3(4 + a) + b + -5 + -1a + 7(b + -3) = 0
(4 * 3 + a * 3) + b + -5 + -1a + 7(b + -3) = 0
(12 + 3a) + b + -5 + -1a + 7(b + -3) = 0

Reorder the terms:
12 + 3a + b + -5 + -1a + 7(-3 + b) = 0
12 + 3a + b + -5 + -1a + (-3 * 7 + b * 7) = 0
12 + 3a + b + -5 + -1a + (-21 + 7b) = 0

Reorder the terms:
12 + -5 + -21 + 3a + -1a + b + 7b = 0

Combine like terms: 12 + -5 = 7
7 + -21 + 3a + -1a + b + 7b = 0

Combine like terms: 7 + -21 = -14
-14 + 3a + -1a + b + 7b = 0

Combine like terms: 3a + -1a = 2a
-14 + 2a + b + 7b = 0

Combine like terms: b + 7b = 8b
-14 + 2a + 8b = 0

Solving
-14 + 2a + 8b = 0

Solving for variable 'a'.

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

Add '14' to each side of the equation.
-14 + 2a + 14 + 8b = 0 + 14

Reorder the terms:
-14 + 14 + 2a + 8b = 0 + 14

Combine like terms: -14 + 14 = 0
0 + 2a + 8b = 0 + 14
2a + 8b = 0 + 14

Combine like terms: 0 + 14 = 14
2a + 8b = 14

Add '-8b' to each side of the equation.
2a + 8b + -8b = 14 + -8b

Combine like terms: 8b + -8b = 0
2a + 0 = 14 + -8b
2a = 14 + -8b

Divide each side by '2'.
a = 7 + -4b

Simplifying
a = 7 + -4b

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