7(a-3)=3(5+a)

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Solution for 7(a-3)=3(5+a) equation:


Simplifying
7(a + -3) = 3(5 + a)

Reorder the terms:
7(-3 + a) = 3(5 + a)
(-3 * 7 + a * 7) = 3(5 + a)
(-21 + 7a) = 3(5 + a)
-21 + 7a = (5 * 3 + a * 3)
-21 + 7a = (15 + 3a)

Solving
-21 + 7a = 15 + 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.
-21 + 7a + -3a = 15 + 3a + -3a

Combine like terms: 7a + -3a = 4a
-21 + 4a = 15 + 3a + -3a

Combine like terms: 3a + -3a = 0
-21 + 4a = 15 + 0
-21 + 4a = 15

Add '21' to each side of the equation.
-21 + 21 + 4a = 15 + 21

Combine like terms: -21 + 21 = 0
0 + 4a = 15 + 21
4a = 15 + 21

Combine like terms: 15 + 21 = 36
4a = 36

Divide each side by '4'.
a = 9

Simplifying
a = 9

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