8(9+7)=3a+21

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Solution for 8(9+7)=3a+21 equation:


Simplifying
8(9 + 7) = 3a + 21

Combine like terms: 9 + 7 = 16
8(16) = 3a + 21

Multiply 8 * 16
128 = 3a + 21

Reorder the terms:
128 = 21 + 3a

Solving
128 = 21 + 3a

Solving for variable 'a'.

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

Add '-3a' to each side of the equation.
128 + -3a = 21 + 3a + -3a

Combine like terms: 3a + -3a = 0
128 + -3a = 21 + 0
128 + -3a = 21

Add '-128' to each side of the equation.
128 + -128 + -3a = 21 + -128

Combine like terms: 128 + -128 = 0
0 + -3a = 21 + -128
-3a = 21 + -128

Combine like terms: 21 + -128 = -107
-3a = -107

Divide each side by '-3'.
a = 35.66666667

Simplifying
a = 35.66666667

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