5a+7(3+a)=

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


Simplifying
5a + 7(3 + a) = 0
5a + (3 * 7 + a * 7) = 0
5a + (21 + 7a) = 0

Reorder the terms:
21 + 5a + 7a = 0

Combine like terms: 5a + 7a = 12a
21 + 12a = 0

Solving
21 + 12a = 0

Solving for variable 'a'.

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

Add '-21' to each side of the equation.
21 + -21 + 12a = 0 + -21

Combine like terms: 21 + -21 = 0
0 + 12a = 0 + -21
12a = 0 + -21

Combine like terms: 0 + -21 = -21
12a = -21

Divide each side by '12'.
a = -1.75

Simplifying
a = -1.75

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