What is 3-15/7*2+21/6 ?

The solution to 3-15/7*2+21/6 is 2 3/14

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3-15/7*2+21/6

3 - \frac{15}{7} \cdot 2 + \frac{21}{6}

2 \frac{3}{14}

Solution steps

3 - \frac{15}{7} \cdot 2 + \frac{21}{6}

\frac{21}{6} = \frac{7}{2}

= 3 - \frac{15}{7} \cdot 2 + \frac{7}{2}

Follow the PEMDAS order of operations

Multiply and divide (left to right)

\frac{15}{7} \cdot 2 : \frac{30}{7}

= 3 - \frac{30}{7} + \frac{7}{2}

Add and subtract (left to right)

3 - \frac{30}{7} + \frac{7}{2} : \frac{31}{14}

= \frac{31}{14}

Convert improper fractions to mixed numbers:

\frac{31}{14} = 2 \frac{3}{14}

= 2 \frac{3}{14}

50 \cdot 1 + 100 \cdot 2 + 70 \cdot 3

1 + 16 + (- 13) + (- 50) - 38

2 (15)^{2}

[3 - 2 \cdot (1 - \frac{1}{2})] \div \frac{1}{2}

(- 5) - (- 3) - (+ 7) + (- 4)