Question

1no. -80 +6 x[-3x8+20] +100
2no. -5 -(-48) ÷(12)+(-2)x6
3no. 120 - 12[3 - 4{2 ×3 -2 *(-8)}]
4no. {60 (-3)}÷ 45÷(-2)
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Answer 1

Step-by-step explanation:

1.) 80 +6 x[-3x8+20] +100

=. 80+6[-24+20]+100

=. 80+6×-4+100

=. 80-24+100

=. 180-24

=. 156. Ans.

~~~~`~~~~~~~~~~~~~~~~~~~~~~~~

2.). 5 -(-48) ÷(12)+(-2)x6

=. 5-(-4)+(-2)×6

=. 5-(-4)+(-12)

=. 5-(-4)-12

=. 5-(-16)

=. -21. Ans.

.......................................................

3.). 120 - 12[3 - 4{2 ×3 -2 *(-8)}]

=. 120-12[3+4{2×3-(-16)}]

=. 120-12[3-4{2×3+16}]

=. 120-12[3-4{6+16}]

=. 120-12[3-4×22]

=. 120-12[3-88]

=. 120-12×-85

=. 120+1020

=. 1140. Ans.

_________________________

4.). {60 (-3)}÷ 45÷(-2)

=. -180÷45÷2

=. -90÷45

=. -2 Ans.

OR

4.). {60 (-3)}÷ 45÷(-2)

=. -180÷45÷2

=. -4÷2

=. -2. Ans.

Answer 2

Answer:

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Step-by-step explanation:

$- 80 + 6 \times ( - 3 \times 8 + 20) + 100 \\ - 80 + 6 \times ( - 24 + 20) + 100 \\ - 80 + 6 \times - 4 + 100 \\ - 80 + ( - 24) + 100 \\ - 4 \: \: answer$