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a fost răspuns

a) (4,2: 0,012+ 3,5x o,24) x1,7
b) (0,1x 0,02+7,3x 1,5- 1,3 x 2,1 ) x100
c) (3,5x 2,4- 1,2 :0,4-5x0,01 ) x10
d)1,03 x (4,5 :0,4+ 3,5 : 0,2 -0,7x 0,1)
e) 0,1x {3+3,2 x [100x0,01+5,2x(4-1,2x0,1)]}

Răspuns :

A) 144,28
B) 2.027,13
C) 1,3
D) 2,1875
E) 15,83728

Sper ca te-am ajutat :D !
Nitugheorghe57
a)(4.2÷0.012+3.5×0.24)×1.7=
(3.5+0.84)×1.7=
4.34×1.7=7.378
b)(0.1×0.02+7.3×1.5-1.3×2.1)×100=
(0.002+10.95-2.73)×100=(10.952-2.73)×100=8.222×100=822.2
c)(3.5×2.4-1.2÷0.4-5×0.01)×10=
(8.4-3-0.05)×10=
(5.4-0.05)×10=5.35×10=53.2
d)1.03×(4.5÷0.4+3.5÷0.2-0.7×0.1)=
1.03×(11.25+17.5-0.07)=
1.03×(28.75-0.07)=
1.03×28.68=29.5404
e)0.1×{3+3.2×[100×0.01+5.2×(4-1.2×0.10)]}=
0.1×{3+3.2×[100×0.01+5.2×(4-0.12)]}=
0.1×[3+3.2×(100×0.01+5.2×3.88)]=
0.1×[3+3.2×(1+20.176)]=
0.1×(3+3.2×21.176)=
0.1×(3+67.7632)=
0.1×70.7632=7.07632
succes


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