Question

A)0,47x-0,14x=1,65


B)(4x-1):3= -o treime


C)7 pe 9x - 2 pe 3x =2


D)-3·(2-15x)=-6

Answer 1

a) 0,33x=1,65
x=1,65/0,33
x=165/100:33/100
x=165/100·100/33
x=165/33
x=5

b) rezulta (4x-1)/3=1/3
3(4x-1)=3
12x-3=3
12x=3+3
12x=6
x=6/12=simplif cu 6=1/2

c) rezulta 7/9x-2/3x=2
(7-2·3)/3x=2
1/3x=2
1=2·3x
1=6x
6x=1
x=1/6

d) rezulta -6+45x=-6
45x=-6+6
45x=0
x=0