21a+18a+31b-3b=

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Solution for 21a+18a+31b-3b= equation:


Simplifying
21a + 18a + 31b + -3b = 0

Combine like terms: 21a + 18a = 39a
39a + 31b + -3b = 0

Combine like terms: 31b + -3b = 28b
39a + 28b = 0

Solving
39a + 28b = 0

Solving for variable 'a'.

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

Add '-28b' to each side of the equation.
39a + 28b + -28b = 0 + -28b

Combine like terms: 28b + -28b = 0
39a + 0 = 0 + -28b
39a = 0 + -28b
Remove the zero:
39a = -28b

Divide each side by '39'.
a = -0.7179487179b

Simplifying
a = -0.7179487179b

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