2a+3(a-4b)+7b-9=

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Solution for 2a+3(a-4b)+7b-9= equation:


Simplifying
2a + 3(a + -4b) + 7b + -9 = 0
2a + (a * 3 + -4b * 3) + 7b + -9 = 0
2a + (3a + -12b) + 7b + -9 = 0

Reorder the terms:
-9 + 2a + 3a + -12b + 7b = 0

Combine like terms: 2a + 3a = 5a
-9 + 5a + -12b + 7b = 0

Combine like terms: -12b + 7b = -5b
-9 + 5a + -5b = 0

Solving
-9 + 5a + -5b = 0

Solving for variable 'a'.

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

Add '9' to each side of the equation.
-9 + 5a + 9 + -5b = 0 + 9

Reorder the terms:
-9 + 9 + 5a + -5b = 0 + 9

Combine like terms: -9 + 9 = 0
0 + 5a + -5b = 0 + 9
5a + -5b = 0 + 9

Combine like terms: 0 + 9 = 9
5a + -5b = 9

Add '5b' to each side of the equation.
5a + -5b + 5b = 9 + 5b

Combine like terms: -5b + 5b = 0
5a + 0 = 9 + 5b
5a = 9 + 5b

Divide each side by '5'.
a = 1.8 + b

Simplifying
a = 1.8 + b

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