Question

va rog frumos dau coroana

Answer 1

a) 0,12=12/100=6/50=3/25
3x=3/25+6 amplificãm pe 6 cu 25
3x= 3/25+150/25
3x=153/25
x=153/25×1/3
x=51/25=2,04

b) 3,2=32/10=16/5
-4x= -16/5
x= 16/5×1/4
x=4/5

c) 0,4x=5-3,8
0,4x=1,2
1,2=12/10=6/5
0,4=4/10=2/5
x=6/5×5/2
x=3

d) 1,2^2=1,44=144/100
0,08=8/100
2/3x=144/100-8/100
2/3x=136/100
x=136/100×3/2
x=204/100=2,04

Answer 2

a)3x-6=0,12

3x=0,12+6

3x=6,12

x=6,12:3=2,04

b)-4x+3,2=0

-4x=-3,2

x=-3,2:(-4)

X=0,8=8/10=4/5

c)5-0,4x=3,8

-0,4x=3,8-5

-0,4x=-1,2

x=-1,2:(-0,4)

x=3

d)2/3 x=1,2^2-0,08

2/3 x=1,44-0,08

2/3 x=1,36

x=136/100:2/3

x=136/100×3/2

x=408/200

x=2,04