(1) 7+(-7)
(2) 20+(-12)
(3) 220-(-130)
(4) 19+(-2) ​

(1) 7+(-7)
(2) 20+(-12)
(3) 220-(-130)
(4) 19+(-2) ​

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Daisy

2 thoughts on “(1) 7+(-7) <br />(2) 20+(-12) <br />(3) 220-(-130) <br />(4) 19+(-2) ​”

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