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Question
-21=-3x
Solve the equation
x=7
Evaluate
-21=-3x
Swap the sides of the equation
-3x=-21
Change the signs on both sides of the equation
3x=21
Divide both sides
\frac{3x}{3}=\frac{21}{3}
Divide the numbers
x=\frac{21}{3}
Solution
More Steps
Evaluate
\frac{21}{3}
Reduce the numbers
\frac{7}{1}
Calculate
7
x=7
Show Solutions
Rewrite the equation
x=7
Evaluate
-21=-3x
Rewrite the expression
-3x=-21
Multiply both sides
3x=21
Solution
x=7
Show Solutions
Graph
