45ab-63a-15b+21=0

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Solution for 45ab-63a-15b+21=0 equation:


Simplifying
45ab + -63a + -15b + 21 = 0

Reorder the terms:
21 + -63a + 45ab + -15b = 0

Solving
21 + -63a + 45ab + -15b = 0

Solving for variable 'a'.

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

Add '-21' to each side of the equation.
21 + -63a + 45ab + -21 + -15b = 0 + -21

Reorder the terms:
21 + -21 + -63a + 45ab + -15b = 0 + -21

Combine like terms: 21 + -21 = 0
0 + -63a + 45ab + -15b = 0 + -21
-63a + 45ab + -15b = 0 + -21

Combine like terms: 0 + -21 = -21
-63a + 45ab + -15b = -21

Add '15b' to each side of the equation.
-63a + 45ab + -15b + 15b = -21 + 15b

Combine like terms: -15b + 15b = 0
-63a + 45ab + 0 = -21 + 15b
-63a + 45ab = -21 + 15b

Reorder the terms:
21 + -63a + 45ab + -15b = -21 + 15b + 21 + -15b

Reorder the terms:
21 + -63a + 45ab + -15b = -21 + 21 + 15b + -15b

Combine like terms: -21 + 21 = 0
21 + -63a + 45ab + -15b = 0 + 15b + -15b
21 + -63a + 45ab + -15b = 15b + -15b

Combine like terms: 15b + -15b = 0
21 + -63a + 45ab + -15b = 0

Factor out the Greatest Common Factor (GCF), '3'.
3(7 + -21a + 15ab + -5b) = 0

Ignore the factor 3.

Subproblem 1

Set the factor '(7 + -21a + 15ab + -5b)' equal to zero and attempt to solve: Simplifying 7 + -21a + 15ab + -5b = 0 Solving 7 + -21a + 15ab + -5b = 0 Move all terms containing a to the left, all other terms to the right. Add '-7' to each side of the equation. 7 + -21a + 15ab + -7 + -5b = 0 + -7 Reorder the terms: 7 + -7 + -21a + 15ab + -5b = 0 + -7 Combine like terms: 7 + -7 = 0 0 + -21a + 15ab + -5b = 0 + -7 -21a + 15ab + -5b = 0 + -7 Combine like terms: 0 + -7 = -7 -21a + 15ab + -5b = -7 Add '5b' to each side of the equation. -21a + 15ab + -5b + 5b = -7 + 5b Combine like terms: -5b + 5b = 0 -21a + 15ab + 0 = -7 + 5b -21a + 15ab = -7 + 5b The solution to this equation could not be determined. This subproblem is being ignored because a solution could not be determined. The solution to this equation could not be determined.

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