3(a-7)*7=28

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Solution for 3(a-7)*7=28 equation:


Simplifying
3(a + -7) * 7 = 28

Reorder the terms:
3(-7 + a) * 7 = 28

Reorder the terms for easier multiplication:
3 * 7(-7 + a) = 28

Multiply 3 * 7
21(-7 + a) = 28
(-7 * 21 + a * 21) = 28
(-147 + 21a) = 28

Solving
-147 + 21a = 28

Solving for variable 'a'.

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

Add '147' to each side of the equation.
-147 + 147 + 21a = 28 + 147

Combine like terms: -147 + 147 = 0
0 + 21a = 28 + 147
21a = 28 + 147

Combine like terms: 28 + 147 = 175
21a = 175

Divide each side by '21'.
a = 8.333333333

Simplifying
a = 8.333333333

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