Solve 2/5+x=9/10

$$\frac { 2 } { 5 } + x = \frac { 9 } { 10 }$$

Solve for x

$$x=\frac{1}{2}=0.5$$

Steps for Solving Linear Equation

Subtract \frac{2}{5} from both sides.

$$x=\frac{9}{10}-\frac{2}{5}$$

Least common multiple of 10 and 5 is 10. Convert \frac{9}{10} and \frac{2}{5} to fractions with denominator 10.

$$x=\frac{9}{10}-\frac{4}{10}$$

Since \frac{9}{10} and \frac{4}{10} have the same denominator, subtract them by subtracting their numerators.

$$x=\frac{9-4}{10}$$

Subtract 4 from 9 to get 5.

$$x=\frac{5}{10}$$

Reduce the fraction \frac{5}{10} to lowest terms by extracting and canceling out 5.

$$x=\frac{1}{2}$$