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a fost răspuns

afla nr necunoscut: 28+72÷b+12=48 ; 47-56÷c-11=29; (56+16÷2)÷8+d=18

Răspuns :

28+72:b+12=48 40+72:b=48 72:b=48-40 72:b=8 72:8=9 v:8×9=72 47-56:c-11=29 36-56:c=29 56:c=36-29 56:c=7 56:7=8 v:7×8=56 (56+16:2):8+d=18 (56+8):8+d=18 64:8+d=18 8+d=18 18-8=10 v:8+10=18 sper că te-am ajutat!!

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