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gizmo_the_mogwai [7]

3 years ago

11

2/3 + (-5/7) .........

2 answers:

dmitriy555 [2]3 years ago

4 0

Answer:

-1/21

Step-by-step explanation:

2/3 + -5/7

Get a common denominator of 21

2/3 *7/7 = 14/21

-5/7*3/3 = -15/21

14/21 - 15/21 = -1/21

Andru [333]3 years ago

4 0

Answer:

-1/21

Step-by-step explanation:

2/3 + (-5/7)

2/3 - 5/7

Lcm: 21

(2×7 - 5×3)/21

(14 - 15)/21

-1/21

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