7(2a-b)-4(5b-4a)=

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Solution for 7(2a-b)-4(5b-4a)= equation:


Simplifying
7(2a + -1b) + -4(5b + -4a) = 0
(2a * 7 + -1b * 7) + -4(5b + -4a) = 0
(14a + -7b) + -4(5b + -4a) = 0

Reorder the terms:
14a + -7b + -4(-4a + 5b) = 0
14a + -7b + (-4a * -4 + 5b * -4) = 0
14a + -7b + (16a + -20b) = 0

Reorder the terms:
14a + 16a + -7b + -20b = 0

Combine like terms: 14a + 16a = 30a
30a + -7b + -20b = 0

Combine like terms: -7b + -20b = -27b
30a + -27b = 0

Solving
30a + -27b = 0

Solving for variable 'a'.

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

Add '27b' to each side of the equation.
30a + -27b + 27b = 0 + 27b

Combine like terms: -27b + 27b = 0
30a + 0 = 0 + 27b
30a = 0 + 27b
Remove the zero:
30a = 27b

Divide each side by '30'.
a = 0.9b

Simplifying
a = 0.9b

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