12(4a+5b)-7(9a+4b)=

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Solution for 12(4a+5b)-7(9a+4b)= equation:


Simplifying
12(4a + 5b) + -7(9a + 4b) = 0
(4a * 12 + 5b * 12) + -7(9a + 4b) = 0
(48a + 60b) + -7(9a + 4b) = 0
48a + 60b + (9a * -7 + 4b * -7) = 0
48a + 60b + (-63a + -28b) = 0

Reorder the terms:
48a + -63a + 60b + -28b = 0

Combine like terms: 48a + -63a = -15a
-15a + 60b + -28b = 0

Combine like terms: 60b + -28b = 32b
-15a + 32b = 0

Solving
-15a + 32b = 0

Solving for variable 'a'.

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

Add '-32b' to each side of the equation.
-15a + 32b + -32b = 0 + -32b

Combine like terms: 32b + -32b = 0
-15a + 0 = 0 + -32b
-15a = 0 + -32b
Remove the zero:
-15a = -32b

Divide each side by '-15'.
a = 2.133333333b

Simplifying
a = 2.133333333b

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