What is 18-(7+3-15-4)-15 ?

The solution to 18-(7+3-15-4)-15 is 12

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18-(7+3-15-4)-15

18 - (7 + 3 - 15 - 4) - 15

12

Solution steps

18 - (7 + 3 - 15 - 4) - 15

Follow the PEMDAS order of operations

Calculate within parentheses

(7 + 3 - 15 - 4) : - 9

7 + 3 - 15 - 4

Add and subtract (left to right)

7 + 3 = 10

= 10 - 15 - 4

10 - 15 = - 5

= - 5 - 4

- 5 - 4 = - 9

= - 9

= 18 - (- 9) - 15

Add and subtract (left to right)

18 - (- 9) - 15 : 12

18 - (- 9) - 15

Apply rule

- (- a) = + a

- (- 9) = + 9

= 18 + 9 - 15

18 + 9 = 27

= 27 - 15

27 - 15 = 12

= 12

= 12

8 - (\frac{2}{5}) (- \frac{7}{9})

6 \cdot 3 \div 2 + 5 \cdot 8 \cdot 0

\frac{7}{16} + (\frac{5}{8} - \frac{3}{4})

7 - 8 - 1 + 11 - 3

(2 - \frac{1}{3}) \times 3