using distributive property solye
1) 5 x 99 -(-5)
2) 18 x (-16) + (-2) + (16)
3) 40 x (-23) + 40 x (-17 )

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Solution

$(1) . 5 \times 99 - (- 5) = 5 \times 99 + 5 \times 1 = 5 \times (99 + 1) = 5 \times 100 = 500 (2) . 18 \times (- 16) + (- 2) \times 16 = 18 \times (- 16) + 2 \times (- 16) = (- 16) \times (18 + 2) = (- 16) \times 20 = - 320 (3) . 40 \times (- 23) + 40 \times (- 17) = 40 \times [(- 23) + (- 17)] = 40 \times (- 40) = - 1600$

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using distributive property solye1) 5 x 99 -(-5)2) 18 x (-16) + (-2) + (16)3) 40 x (-23) + 40 x (-17 )

1. 5 × 99 - -5=5 × 99 + 5 × 1=5×99 + 1=5 × 100=5002. 18 × -16 + -2 × 16=18 × -16 + 2 × -16=-16 × 18 + 2=-16 × 20= -3203. 40 × -23 + 40 × -17=40 × -23 + -17=40 × -40= -1600

using distributive property solye
1) 5 x 99 -(-5)
2) 18 x (-16) + (-2) + (16)
3) 40 x (-23) + 40 x (-17 )