164=7a+5(2a+4)+a

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Solution for 164=7a+5(2a+4)+a equation:


Simplifying
164 = 7a + 5(2a + 4) + a

Reorder the terms:
164 = 7a + 5(4 + 2a) + a
164 = 7a + (4 * 5 + 2a * 5) + a
164 = 7a + (20 + 10a) + a

Reorder the terms:
164 = 20 + 7a + 10a + a

Combine like terms: 7a + 10a = 17a
164 = 20 + 17a + a

Combine like terms: 17a + a = 18a
164 = 20 + 18a

Solving
164 = 20 + 18a

Solving for variable 'a'.

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

Add '-18a' to each side of the equation.
164 + -18a = 20 + 18a + -18a

Combine like terms: 18a + -18a = 0
164 + -18a = 20 + 0
164 + -18a = 20

Add '-164' to each side of the equation.
164 + -164 + -18a = 20 + -164

Combine like terms: 164 + -164 = 0
0 + -18a = 20 + -164
-18a = 20 + -164

Combine like terms: 20 + -164 = -144
-18a = -144

Divide each side by '-18'.
a = 8

Simplifying
a = 8

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