Question

1. Evaluate the following: i. | -8| + |-6| ii. | 7 | - | -3 | iii. 17- {8 ÷ (2 x 3 – 4)} iv. 6 – {5 x 3 – (-12) x 16 ÷(-8)}

Answer 1

Answer:

I didn't understand the question

Answer 2

(i) (-8) + (-6)
= -8-6 [ because plus into minus is minus]
= -14 [ because minus + minus is minus and both are negative so you will put minus sign in the answer]


(ii) (7) - (-3)
= 7 + 3 [ cause minus + minus = plus
= 10

(iii) 17 - {8/ (2 x 3 - 4}
= 17 - {8/ (6-4} ...[ Solving the bracket first]
= 17 - {8/2} ....[ 6 - 4 = 2]
= 17 - 4 ....[ 8/2 = 4]
= 13

(iv) 6 - { 5 x 3 - (-12) x 16/(-8)}
= 6 - {15+12 x (-2)} ....[solving the bracket
first 5 x3 = 15, minus
into minus is plus and 16/-8
is -2]
= 6 - {27 x (-2)}
= 6 - (-54) .... [minus into plus = minus so
-54]
= 6+54 .....[ minus into minus is plus]
= 60

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