100a+90(4a+9b)+70b-2a=

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Solution for 100a+90(4a+9b)+70b-2a= equation:


Simplifying
100a + 90(4a + 9b) + 70b + -2a = 0
100a + (4a * 90 + 9b * 90) + 70b + -2a = 0
100a + (360a + 810b) + 70b + -2a = 0

Reorder the terms:
100a + 360a + -2a + 810b + 70b = 0

Combine like terms: 100a + 360a = 460a
460a + -2a + 810b + 70b = 0

Combine like terms: 460a + -2a = 458a
458a + 810b + 70b = 0

Combine like terms: 810b + 70b = 880b
458a + 880b = 0

Solving
458a + 880b = 0

Solving for variable 'a'.

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

Add '-880b' to each side of the equation.
458a + 880b + -880b = 0 + -880b

Combine like terms: 880b + -880b = 0
458a + 0 = 0 + -880b
458a = 0 + -880b
Remove the zero:
458a = -880b

Divide each side by '458'.
a = -1.92139738b

Simplifying
a = -1.92139738b

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