7a+4+8a=13-30

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Solution for 7a+4+8a=13-30 equation:


Simplifying
7a + 4 + 8a = 13 + -30

Reorder the terms:
4 + 7a + 8a = 13 + -30

Combine like terms: 7a + 8a = 15a
4 + 15a = 13 + -30

Combine like terms: 13 + -30 = -17
4 + 15a = -17

Solving
4 + 15a = -17

Solving for variable 'a'.

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

Add '-4' to each side of the equation.
4 + -4 + 15a = -17 + -4

Combine like terms: 4 + -4 = 0
0 + 15a = -17 + -4
15a = -17 + -4

Combine like terms: -17 + -4 = -21
15a = -21

Divide each side by '15'.
a = -1.4

Simplifying
a = -1.4

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