answer the following question
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Answered by
1
Answer:
1. (15)-(-25)
15+25 = 40
2.9+23-(-25)-40
32+25-40
57-40 = 17
3.-42-<(-30)+(-50)>
-42-<-30-50>
-42+80 = 38
4.(-30+10)-(40-20)
(-20)-20 = -40
5.<-437-1+8>-(-10)-(15+(-17))
(--430)+10+2
-432+10 = -422
6.509-(-19)+(-19)+20+(-20)
509+19-19+20-20
509
Answered by
0
Answer:
(a) 15-(-25)
= 15+25
= 40
(b) 9+23-(25)-40
= 9+23+25-40
= 32+25-40
= 57-40
= 17
(c) -42-[(-30)+(-50)]
= -42+30+50
= -42+80
= 38
(d) (-30+10)-(40-20)
= -20-60
= -80
(e) [-437-1+8]+[234-(-10)]-[15+(-17)]
= (-437+7)+(234+10)-(15-17)
= -430+244+3
= -430+247
= -183
(f) 509-(-19)+(-19)+20+(-20)
= 509+19-19+20-20
= 509
Step-by-step explanation:
(+) x (-) = " (-) minus "
(-) x (-) = (+) plus
(+) x (+) = (+) plus
we only use this formulas
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