find the sum by suitable rearrangement
a) (-12) - [(-1) + (-27) - (-3-2)
b) [{(-125)- (-3)} + 157 + 6]
c) [{(-26-(-15)}+{23+(-17)}]
d) [21-{(-75)+15-(-75)}+135-(-5)]
pls tell step by step
Answers
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Step-by-step explanation:
a)(-12)-[(-1)+(-27)-(-3-2)
= (-12)-[-28-5]
= -12+33
= 21
b) [{(-125)-(-3)}+157+6]
= [-122+157+6]
= -122+163
= 41
c)
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