Solve 42/7+0,9*3

$$4 \frac { 2 } { 7 } + 0,9 \cdot 3$$

Evaluate

$$\frac{489}{70}\approx 6,985714286$$

Solution Steps

Multiply 4 and 7 to get 28.

$$\frac{28+2}{7}+0,9\times 3$$

Add 28 and 2 to get 30.

$$\frac{30}{7}+0,9\times 3$$

Multiply 0,9 and 3 to get 2,7.

$$\frac{30}{7}+2,7$$

Convert decimal number 2,7 to fraction \frac{27}{10}.

$$\frac{30}{7}+\frac{27}{10}$$

Least common multiple of 7 and 10 is 70. Convert \frac{30}{7} and \frac{27}{10} to fractions with denominator 70.

$$\frac{300}{70}+\frac{189}{70}$$

Since \frac{300}{70} and \frac{189}{70} have the same denominator, add them by adding their numerators.

$$\frac{300+189}{70}$$

Add 300 and 189 to get 489.

$$\frac{489}{70}$$

Factor

$$\frac{3 \cdot 163}{2 \cdot 5 \cdot 7} = 6\frac{69}{70} = 6.985714285714286$$