7a-7=15(a-3)

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Solution for 7a-7=15(a-3) equation:


Simplifying
7a + -7 = 15(a + -3)

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

Reorder the terms:
-7 + 7a = 15(-3 + a)
-7 + 7a = (-3 * 15 + a * 15)
-7 + 7a = (-45 + 15a)

Solving
-7 + 7a = -45 + 15a

Solving for variable 'a'.

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

Add '-15a' to each side of the equation.
-7 + 7a + -15a = -45 + 15a + -15a

Combine like terms: 7a + -15a = -8a
-7 + -8a = -45 + 15a + -15a

Combine like terms: 15a + -15a = 0
-7 + -8a = -45 + 0
-7 + -8a = -45

Add '7' to each side of the equation.
-7 + 7 + -8a = -45 + 7

Combine like terms: -7 + 7 = 0
0 + -8a = -45 + 7
-8a = -45 + 7

Combine like terms: -45 + 7 = -38
-8a = -38

Divide each side by '-8'.
a = 4.75

Simplifying
a = 4.75

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