# Solve for a -7/5a=28

-75a=28
Multiply both sides of the equation by -57.
-57⋅(-75)⋅a=-57⋅28
Simplify both sides of the equation.
Simplify -57⋅(-75)⋅a.
Cancel the common factor of 5.
Move the leading negative in -57 into the numerator.
-57⋅(-75)⋅a=-57⋅28
Move the leading negative in -75 into the numerator.
-57⋅-75⋅a=-57⋅28
Factor 5 out of -5.
5(-1)7⋅-75⋅a=-57⋅28
Cancel the common factor.
5⋅-17⋅-75⋅a=-57⋅28
Rewrite the expression.
-17⋅-7⋅a=-57⋅28
-17⋅-7⋅a=-57⋅28
Cancel the common factor of 7.
Factor 7 out of -7.
-17⋅(7(-1))⋅a=-57⋅28
Cancel the common factor.
-17⋅(7⋅-1)⋅a=-57⋅28
Rewrite the expression.
-1⋅-1⋅a=-57⋅28
-1⋅-1⋅a=-57⋅28
Multiply.
Multiply -1 by -1.
1⋅a=-57⋅28
Multiply a by 1.
a=-57⋅28
a=-57⋅28
a=-57⋅28
Simplify -57⋅28.
Cancel the common factor of 7.
Move the leading negative in -57 into the numerator.
a=-57⋅28
Factor 7 out of 28.
a=-57⋅(7(4))
Cancel the common factor.
a=-57⋅(7⋅4)
Rewrite the expression.
a=-5⋅4
a=-5⋅4
Multiply -5 by 4.
a=-20
a=-20
a=-20
Solve for a -7/5a=28

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