3(a-3)-9=4a-8(a-10)

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Solution for 3(a-3)-9=4a-8(a-10) equation:


Simplifying
3(a + -3) + -9 = 4a + -8(a + -10)

Reorder the terms:
3(-3 + a) + -9 = 4a + -8(a + -10)
(-3 * 3 + a * 3) + -9 = 4a + -8(a + -10)
(-9 + 3a) + -9 = 4a + -8(a + -10)

Reorder the terms:
-9 + -9 + 3a = 4a + -8(a + -10)

Combine like terms: -9 + -9 = -18
-18 + 3a = 4a + -8(a + -10)

Reorder the terms:
-18 + 3a = 4a + -8(-10 + a)
-18 + 3a = 4a + (-10 * -8 + a * -8)
-18 + 3a = 4a + (80 + -8a)

Reorder the terms:
-18 + 3a = 80 + 4a + -8a

Combine like terms: 4a + -8a = -4a
-18 + 3a = 80 + -4a

Solving
-18 + 3a = 80 + -4a

Solving for variable 'a'.

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

Add '4a' to each side of the equation.
-18 + 3a + 4a = 80 + -4a + 4a

Combine like terms: 3a + 4a = 7a
-18 + 7a = 80 + -4a + 4a

Combine like terms: -4a + 4a = 0
-18 + 7a = 80 + 0
-18 + 7a = 80

Add '18' to each side of the equation.
-18 + 18 + 7a = 80 + 18

Combine like terms: -18 + 18 = 0
0 + 7a = 80 + 18
7a = 80 + 18

Combine like terms: 80 + 18 = 98
7a = 98

Divide each side by '7'.
a = 14

Simplifying
a = 14

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