3(5a-b)-7(4b-7a)=

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Solution for 3(5a-b)-7(4b-7a)= equation:


Simplifying
3(5a + -1b) + -7(4b + -7a) = 0
(5a * 3 + -1b * 3) + -7(4b + -7a) = 0
(15a + -3b) + -7(4b + -7a) = 0

Reorder the terms:
15a + -3b + -7(-7a + 4b) = 0
15a + -3b + (-7a * -7 + 4b * -7) = 0
15a + -3b + (49a + -28b) = 0

Reorder the terms:
15a + 49a + -3b + -28b = 0

Combine like terms: 15a + 49a = 64a
64a + -3b + -28b = 0

Combine like terms: -3b + -28b = -31b
64a + -31b = 0

Solving
64a + -31b = 0

Solving for variable 'a'.

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

Add '31b' to each side of the equation.
64a + -31b + 31b = 0 + 31b

Combine like terms: -31b + 31b = 0
64a + 0 = 0 + 31b
64a = 0 + 31b
Remove the zero:
64a = 31b

Divide each side by '64'.
a = 0.484375b

Simplifying
a = 0.484375b

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