Question
Solve the equation
x=100
Evaluate
x−30%x=70
Simplify
More Steps

Evaluate
x−30%x
Calculate
More Steps

Evaluate
30%x
By definition p%=p×0.01
30×0.01x
Calculate
0.3x
x−0.3x
Collect like terms by calculating the sum or difference of their coefficients
(1−0.3)x
Subtract the numbers
0.7x
0.7x=70
Divide both sides
0.70.7x=0.770
Divide the numbers
x=0.770
Solution
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Evaluate
0.770
Convert the decimal into a fraction
10770
Multiply by the reciprocal
70×710
Reduce the numbers
10×10
Multiply the numbers
100
x=100
Show Solution

Rewrite the equation
x=100
Evaluate
x−30%x=70
Evaluate
More Steps

Evaluate
x−30%x
Calculate
More Steps

Evaluate
30%x
By definition p%=p×0.01
30×0.01x
Calculate
0.3x
x−0.3x
Collect like terms by calculating the sum or difference of their coefficients
(1−0.3)x
Subtract the numbers
0.7x
0.7x=70
Convert the decimal into a fraction
107x=70
Multiply both sides of the equation by LCD
7x=700
Solution
x=100
Show Solution
