4(7-2a)+7(8+2a)=60

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Solution for 4(7-2a)+7(8+2a)=60 equation:


Simplifying
4(7 + -2a) + 7(8 + 2a) = 60
(7 * 4 + -2a * 4) + 7(8 + 2a) = 60
(28 + -8a) + 7(8 + 2a) = 60
28 + -8a + (8 * 7 + 2a * 7) = 60
28 + -8a + (56 + 14a) = 60

Reorder the terms:
28 + 56 + -8a + 14a = 60

Combine like terms: 28 + 56 = 84
84 + -8a + 14a = 60

Combine like terms: -8a + 14a = 6a
84 + 6a = 60

Solving
84 + 6a = 60

Solving for variable 'a'.

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

Add '-84' to each side of the equation.
84 + -84 + 6a = 60 + -84

Combine like terms: 84 + -84 = 0
0 + 6a = 60 + -84
6a = 60 + -84

Combine like terms: 60 + -84 = -24
6a = -24

Divide each side by '6'.
a = -4

Simplifying
a = -4

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