5(a+3)+4(a+3)=45

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Solution for 5(a+3)+4(a+3)=45 equation:


Simplifying
5(a + 3) + 4(a + 3) = 45

Reorder the terms:
5(3 + a) + 4(a + 3) = 45
(3 * 5 + a * 5) + 4(a + 3) = 45
(15 + 5a) + 4(a + 3) = 45

Reorder the terms:
15 + 5a + 4(3 + a) = 45
15 + 5a + (3 * 4 + a * 4) = 45
15 + 5a + (12 + 4a) = 45

Reorder the terms:
15 + 12 + 5a + 4a = 45

Combine like terms: 15 + 12 = 27
27 + 5a + 4a = 45

Combine like terms: 5a + 4a = 9a
27 + 9a = 45

Solving
27 + 9a = 45

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 + -27 + 9a = 45 + -27

Combine like terms: 27 + -27 = 0
0 + 9a = 45 + -27
9a = 45 + -27

Combine like terms: 45 + -27 = 18
9a = 18

Divide each side by '9'.
a = 2

Simplifying
a = 2

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