7x(15-y)=21

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Solution for 7x(15-y)=21 equation:


Simplifying
7x(15 + -1y) = 21
(15 * 7x + -1y * 7x) = 21
(105x + -7xy) = 21

Solving
105x + -7xy = 21

Solving for variable 'x'.

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

Reorder the terms:
-21 + 105x + -7xy = 21 + -21

Combine like terms: 21 + -21 = 0
-21 + 105x + -7xy = 0

Factor out the Greatest Common Factor (GCF), '7'.
7(-3 + 15x + -1xy) = 0

Ignore the factor 7.

Subproblem 1

Set the factor '(-3 + 15x + -1xy)' equal to zero and attempt to solve: Simplifying -3 + 15x + -1xy = 0 Solving -3 + 15x + -1xy = 0 Move all terms containing x to the left, all other terms to the right. Add '3' to each side of the equation. -3 + 15x + 3 + -1xy = 0 + 3 Reorder the terms: -3 + 3 + 15x + -1xy = 0 + 3 Combine like terms: -3 + 3 = 0 0 + 15x + -1xy = 0 + 3 15x + -1xy = 0 + 3 Combine like terms: 0 + 3 = 3 15x + -1xy = 3 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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