Question

Calculați ( ex 1 va roogg)

Answer 1

a)
4/11×2 3/4 +5/2×3×3 1/5+3/2: 2 1/2:3/5=
=4/11×11/4 +5/2×3×16/5+3/2 × 2/5 ×5/3=
=1+24+1=26

b) 3 27/70×5,8(3)-0,75=
= 237/70×(583-58)/90-75/100=
= 237/70×525/90-3/4=
= 79/4-3/4=
=76/4=19


c) 30/4:25/14+2 1/3× 3/4=
= 30/4 ×14/25+7/3× 3/4=
= 3/1 ×7/5+7/3× 3/4=
=21/5+7/4=
=(84+35)/20=
=119/20=5,95


d)(2/3)³+(2/3)²-1/3 ×[0,(3)]²=
=8/27+4/9-1/3 ×(1/3)²=
=8/27+4/9-1/3 ×1/9=
=(8+12-1)/27=
=19/27=0,(703)

e) 3,0(6)-1 1/15 : 1 3/5+ 1/5:(3/2)²=
=(306-30)/90-16/15 : 8/5+ 1/5 ×4/9=
=276/90-16/15 ×5/8+ 4/45=
=138/45-2/3+ 4/45=
=142/45-2/3=
=(142-30)/45=
=112/45=2,4(8)