Question

efectuati:
a)4/63+1/18-(2/5)la puterea a 2x5/7
b)(1+3/2x5/2):6-1
c)(12/35-7/20)x(-1-1/6)
d)(6/32+5/24)x30/38-1/8
e)3-2:(5/8x12/15)+(1/3)la puterea a 2
f)5/6:1/3:(12/8-5/6)
g)3/4-1/12:1/4-(4/3-1/2)
h)4/3:2/9-(2-3/4)
i)8/3-(14/20-1/15):3/10-8/15
j)6/24+1/6-(15/6-3):3/2
va rog multtt,ajutati-ma,cine ma ajuta ii dau coroama,va roggg

Answer 1

a)4/63+1/18-(2/5)²x5/7=4/63+1/18-4/35=(40+35-72)/630=3/630=1/210

b)(1+3/2x5/2):6-1 =(1+15/4):6-1 = [(4+15)/4]:6-1 = 19/24-1=(19-24)/24=-5/24

c)(12/35-7/20)x(-1-1/6)=(48-49)/140 x(-6-1)/6=(-1/140)x(-7/6)=1/120

d)(6/32+5/24)x30/38-1/8=(19+20)/96x30/38-1/8=38/96 x30/38-1/8=30/96-1/8=
=5/16-1/8=(5-2)/16=3/16

e)3-2:(5/8x12/15)+(1/3)²=3-2:1/2+1/9=3-4+1/9=-1+1/9=(-9+1)/9=-8/9

f)5/6:1/3:(12/8-5/6)=5/2:(3/2-5/6)=5/2:(9-5)/6)=5/2:4/6=5/2 x 3/2 =15/4

g)3/4-1/12:1/4-(4/3-1/2)=3/4-1/3-(8-3)/6=3/4-1/3-5/6=(9-4-10)/12=-5/12

h)4/3:2/9-(2-3/4)=4/3:2/9-(2-3/4)=6-(8-3)/4=6-5/4=(24-5)/4=19/4

i)8/3-(14/20-1/15):3/10-8/15=8/3-(7/10-1/15):3/10-8/15=
=8/3-(21-2)/30 x10/3-8/15= =8/3-19/30 x10/3-8/15=
=8/3-19/9-8/15=(120-95-24) /45=1/45

j)6/24+1/6-(15/6-3):3/2=1/4+1/6-(5/2-3) x2/3=1/4+1/6-(5-6)/2 x2/3=
=1/4+1/6+1/3=(3+2+4)/12=9/12=3/4