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Matematika bantuuuu donggggggggg​

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Jawaban:

a. (-15+(-13))+23= -15+(-13+23=15+10= 25

b. 40+(-30+56)=(40+(-30))+56=10+56= 66

c. (-27+14)+16=-27+(14+16)=27+20= 47

d. 35+(-15+23)=(35+(-15))+23=20+23= 43

e. 20+(-70+49)=(20+(-70))+49=-50+49= -1

f. (45x-20)x5=45x(-20x5)=45x-100= -4500

g. 50x(-20x21)=(50x(-20))x21=-1000x21= -21000

h. (-75x(-40x11)=((-75x-40)x11=3000x11= 33000

i. -20x(5x32=((-20x5)x32=-100x32= -3200

j. (-25)x((-4)x17)=((-25x-4)x17=100x17=1700

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