21=6x*7y

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Solution for 21=6x*7y equation:


Simplifying
21 = 6x * 7y

Reorder the terms for easier multiplication:
21 = 6 * 7x * y

Multiply 6 * 7
21 = 42x * y

Multiply x * y
21 = 42xy

Solving
21 = 42xy

Solving for variable 'x'.

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

Add '-42xy' to each side of the equation.
21 + -42xy = 42xy + -42xy

Combine like terms: 42xy + -42xy = 0
21 + -42xy = 0

Add '-21' to each side of the equation.
21 + -21 + -42xy = 0 + -21

Combine like terms: 21 + -21 = 0
0 + -42xy = 0 + -21
-42xy = 0 + -21

Combine like terms: 0 + -21 = -21
-42xy = -21

Divide each side by '-42y'.
x = 0.5y-1

Simplifying
x = 0.5y-1

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