3(a-3)+7=28

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


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

Reorder the terms:
3(-3 + a) + 7 = 28
(-3 * 3 + a * 3) + 7 = 28
(-9 + 3a) + 7 = 28

Reorder the terms:
-9 + 7 + 3a = 28

Combine like terms: -9 + 7 = -2
-2 + 3a = 28

Solving
-2 + 3a = 28

Solving for variable 'a'.

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

Add '2' to each side of the equation.
-2 + 2 + 3a = 28 + 2

Combine like terms: -2 + 2 = 0
0 + 3a = 28 + 2
3a = 28 + 2

Combine like terms: 28 + 2 = 30
3a = 30

Divide each side by '3'.
a = 10

Simplifying
a = 10

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