Răspuns:
Explicație pas cu pas:
16
a)4(x+y+z)
b) 3(x+y-3z)
c)4(2x-y-z)
d)5(x-2y+5z)
e) 7(x+3y-8z)
f) 9(4x-y+7z)
17
a) 675(235+793)+325×1028=675×1028+325×1028=1028(675+325)=
=1028×1000=1 028 000
b) 576(309+894)+424×1203=576×1203+424×1203=1203(576+424)=
=1203×1000=1 203 000
c) 473(729-275)+454×1027=473×454+454×1027=454(1027+473)=
=454×1500=681 000
d) 506(825+918)-1743×306=506×1743-1743×306=1743(506-306)=
=1743×200=348 600
