3(a-5)+7(b+c)-12=

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Solution for 3(a-5)+7(b+c)-12= equation:


Simplifying
3(a + -5) + 7(b + c) + -12 = 0

Reorder the terms:
3(-5 + a) + 7(b + c) + -12 = 0
(-5 * 3 + a * 3) + 7(b + c) + -12 = 0
(-15 + 3a) + 7(b + c) + -12 = 0
-15 + 3a + (b * 7 + c * 7) + -12 = 0
-15 + 3a + (7b + 7c) + -12 = 0

Reorder the terms:
-15 + -12 + 3a + 7b + 7c = 0

Combine like terms: -15 + -12 = -27
-27 + 3a + 7b + 7c = 0

Solving
-27 + 3a + 7b + 7c = 0

Solving for variable 'a'.

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

Add '27' to each side of the equation.
-27 + 3a + 7b + 27 + 7c = 0 + 27

Reorder the terms:
-27 + 27 + 3a + 7b + 7c = 0 + 27

Combine like terms: -27 + 27 = 0
0 + 3a + 7b + 7c = 0 + 27
3a + 7b + 7c = 0 + 27

Combine like terms: 0 + 27 = 27
3a + 7b + 7c = 27

Add '-7b' to each side of the equation.
3a + 7b + -7b + 7c = 27 + -7b

Combine like terms: 7b + -7b = 0
3a + 0 + 7c = 27 + -7b
3a + 7c = 27 + -7b

Add '-7c' to each side of the equation.
3a + 7c + -7c = 27 + -7b + -7c

Combine like terms: 7c + -7c = 0
3a + 0 = 27 + -7b + -7c
3a = 27 + -7b + -7c

Divide each side by '3'.
a = 9 + -2.333333333b + -2.333333333c

Simplifying
a = 9 + -2.333333333b + -2.333333333c

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