(25:5+7×29):2+[230-(38×2×1+9)]= va rog cine mă ajută......[(357:7+344:8)÷2]×31+17-(500:4+7)=. și următoarea :(28×5+30)÷10+729÷9-[25×(39-19×2)]=. și ultima:(57×2÷3)+32×450-[39×(4+2)÷2]+8=
Răspunsuri la întrebare
Explicație pas cu pas:
1) (25:5+7x29):2+[230-(38x2x1+9)]=.(5+203):2+[230-(76+9)]=208:2+[230-85]=104+145=249 [(357:7+344:8)÷2]x31+17-(500:4+7)=[(51+43):2]x31+17-(125+7)=[94:2]x31+17-132=47x31+17-132=1457+17-132=1474-132=1342 (28x5+30):10+729:9-[25x(39-19x2)]=(140+30):10+729:9-[25x(39-38)]=170:10+729:9-[25x1]=17+81-25=73. (57x2:3)+32x450-[39x(4+2):2]+8=38+32x450-[39x6:2]+8=38+32x450-117+8=38+14400-117+8=14329
Răspuns:
(25:5+7×29):2+[230-(38×2×1+9)] =
= (5+203):2+[230-(76×1+9)]=
=208:2+(230-85)=
= 104+145=
=249
[(357:7+344:8)÷2]×31+17-(500:4+7)=
= [(51+43):2]×31+17-(125+7)=
=( 94:2)×31+17-132=
= 47×31 +17-132=
= 1457 +17 - 132=
= 1474 -132=
= 1342
(28×5+30)÷10+729÷9-[25×(39-19×2)]=.
=(140+30)÷10+729÷9-[25×(39-38)]=
= 170:10 + 81 - 25×1
= 17 + 81 - 25=
= 73
(57×2÷3)+32×450-[39×(4+2)÷2]+8=
= (114÷3)+32×450-(39×6÷2)+8=
= 38 + 32 × 450 - 234:2 + 8 =
= 38 + 14400 - 117 + 8 =
= 14438 - 117 + 8 =
= 14329