What is 8*1/2+3*7-18 ?

The solution to 8*1/2+3*7-18 is 7

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81/2+37-18

8 \cdot \frac{1}{2} + 3 \cdot 7 - 18

7

Solution steps

8 \cdot \frac{1}{2} + 3 \cdot 7 - 18

Follow the PEMDAS order of operations

Multiply and divide (left to right)

8 \cdot \frac{1}{2} : 4

8 \cdot \frac{1}{2}

Convert element to fraction:

8 = \frac{8}{1}

= \frac{8}{1} \cdot \frac{1}{2}

Apply the fraction rule:

\frac{a}{b} \cdot \frac{c}{d} = \frac{a \cdot c}{b \cdot d}

= \frac{8 \cdot 1}{1 \cdot 2}

\frac{8 \cdot 1}{1 \cdot 2} = 4

\frac{8 \cdot 1}{1 \cdot 2}

\frac{8 \cdot 1}{1 \cdot 2} = \frac{8}{2}

\frac{8 \cdot 1}{1 \cdot 2}

Multiply the numbers:

8 \cdot 1 = 8

= \frac{8}{1 \cdot 2}

Multiply the numbers:

1 \cdot 2 = 2

= \frac{8}{2}

= \frac{8}{2}

Divide the numbers:

\frac{8}{2} = 4

= 4

= 4

= 4 + 3 \cdot 7 - 18

Multiply and divide (left to right)

3 \cdot 7 : 21

3 \cdot 7

3 \cdot 7 = 21

= 21

= 4 + 21 - 18

Add and subtract (left to right)

4 + 21 - 18 : 7

4 + 21 - 18

4 + 21 = 25

= 25 - 18

25 - 18 = 7

= 7

= 7

9 - 12 + 4

2/3 + 1/2 + 3/5

- 8 + [7 - (- 10)] - (25 - 13)

- 8 (4 + 2 (3 (2 + 3) + 1) - 4)

- (25) \cdot (69 - 79)