3(4a+5)-2(a-7)=

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Solution for 3(4a+5)-2(a-7)= equation:


Simplifying
3(4a + 5) + -2(a + -7) = 0

Reorder the terms:
3(5 + 4a) + -2(a + -7) = 0
(5 * 3 + 4a * 3) + -2(a + -7) = 0
(15 + 12a) + -2(a + -7) = 0

Reorder the terms:
15 + 12a + -2(-7 + a) = 0
15 + 12a + (-7 * -2 + a * -2) = 0
15 + 12a + (14 + -2a) = 0

Reorder the terms:
15 + 14 + 12a + -2a = 0

Combine like terms: 15 + 14 = 29
29 + 12a + -2a = 0

Combine like terms: 12a + -2a = 10a
29 + 10a = 0

Solving
29 + 10a = 0

Solving for variable 'a'.

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

Add '-29' to each side of the equation.
29 + -29 + 10a = 0 + -29

Combine like terms: 29 + -29 = 0
0 + 10a = 0 + -29
10a = 0 + -29

Combine like terms: 0 + -29 = -29
10a = -29

Divide each side by '10'.
a = -2.9

Simplifying
a = -2.9

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