What is (-2/7+1)+(-5/7) ?

The solution to (-2/7+1)+(-5/7) is 0

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(-2/7+1)+(-5/7)

(- \frac{2}{7} + 1) + (- \frac{5}{7})

0

Solution steps

(- \frac{2}{7} + 1) + (- \frac{5}{7})

Follow the PEMDAS order of operations

Calculate within parentheses

(- \frac{2}{7} + 1) : \frac{5}{7}

- \frac{2}{7} + 1

- \frac{2}{7} + 1 = \frac{5}{7}

- \frac{2}{7} + 1

Convert element to fraction:

1 = \frac{1 \cdot 7}{7}

= \frac{1 \cdot 7}{7} - \frac{2}{7}

Since the denominators are equal, combine the fractions:

\frac{a}{c} \pm \frac{b}{c} = \frac{a \pm b}{c}

= \frac{1 \cdot 7 - 2}{7}

1 \cdot 7 - 2 = 5

1 \cdot 7 - 2

Multiply the numbers:

1 \cdot 7 = 7

= 7 - 2

Subtract the numbers:

7 - 2 = 5

= 5

= \frac{5}{7}

= \frac{5}{7}

= \frac{5}{7} + (- \frac{5}{7})

Add and subtract (left to right)

\frac{5}{7} + (- \frac{5}{7}) : 0

\frac{5}{7} + (- \frac{5}{7})

Apply rule

+ (- a) = - a

+ (- \frac{5}{7}) = - \frac{5}{7}

= \frac{5}{7} - \frac{5}{7}

\frac{5}{7} - \frac{5}{7} = 0

= 0

= 0

- (- 12 - (- 3)) + (- 35) - 18

5 - 2 \times 9

(8)^{2} - 7 (8)

- 2 - (- 2)^{2}

4 (2) + 3 (5) + 5 (- 4) - 18 (- 3) - 9