Question
Solve the equation
x=15
Evaluate
15+20%x=18
Calculate
More Steps

Evaluate
20%x
By definition p%=p×0.01
20×0.01x
Calculate
0.2x
15+0.2x=18
Move the constant to the right-hand side and change its sign
0.2x=18−15
Subtract the numbers
0.2x=3
Divide both sides
0.20.2x=0.23
Divide the numbers
x=0.23
Solution
More Steps

Evaluate
0.23
Convert the decimal into a fraction
More Steps

Evaluate
0.2
Convert the decimal into a fraction
102
Reduce the fraction
51
513
Multiply by the reciprocal
3×5
Multiply the numbers
15
x=15
Show Solution

Rewrite the equation
x=15
Evaluate
15+20%x=18
Evaluate
More Steps

Evaluate
15+20%x
Calculate
More Steps

Evaluate
20%x
By definition p%=p×0.01
20×0.01x
Calculate
0.2x
15+0.2x
15+0.2x=18
Convert the decimal into a fraction
More Steps

Evaluate
0.2
Convert the decimal into a fraction
102
Reduce the fraction
51
15+51x=18
Multiply both sides of the equation by LCD
75+x=90
Solution
x=15
Show Solution
