Question

Find the value of the following:
(a) -4+7-(-20)
(b) 80-(-70)-(-4)
(c)-20+32-3-2
(d) (-15)+(-8)+(20)

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Answer 1

Answer:

$(a) { (- 4)+7} - ( - 20) \\ = > 3 - ( - 20) \\ = > 3 + (+20) \\ = 23$

$(b) \: 80 - ( - 70) - ( - 4) \\ = > 80 + ( + 70) - ( - 4) \\ = > 150 + ( + 4) \\ = 154$

$(c)-20+32-3-2 \\ = > 12 - 3 - 2 \\ = > 12 + ( - 3) - 2 \\ = > 9 + ( - 2) \\ = 7$

$(d)(-15)+(-8)+(20) \\ = > ( - 23) + 20 \\ = (- 3)$

hope this may help you

Answer 2

a) 23 b)154 c)7 d)-3

Step-by-step explanation:

a) -4+7-(-20)

-4+7+20

-4+27

=23

b) 80-(-70)-(-4)

80+70+4

=154

c) -20+32-3-2

-20+32-5

= 32-25=7

d) -15-8+20=20-23=-3

HOPE IT HELPS