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Integers

Question 1:

Find:

(a) 35 − (20) (b) 72 − (90)

(c) (− 15) − (− 18) (d) (− 20) − (13)

(e) 23 − (− 12) (f) (− 32) − (− 40)

Answer:

(a) 35 − 20 = 15

(b) 72 − 90 = −18

(c) −15 − (−18) = − 15 + 18 = 3

(d...

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