Question

Aflati x din:
b) (3·x+2)÷4-2=3 ;
c) {(x+3)·3+3}·3+3=102 ;
d) 5·x÷2=2525 .
V roggg

Answer 1

b)(3x+2):4=3+2
(3x+2):4=5
3x+2=5*4
3x+2=20
3x=20-2
3x=18
x=18:3
x=6

c)[(x+3)*3+3]*3=102-3
[(x+3)*3+3]*3=99
(x+3)*3+3=99:3
(x+3)*3+3=33
(x+3)*3=33-3
(x+3)*3=30
x+3=30:3
x+3=10
x=10-3
x=7


d)5x:2=2525
5x=2525*2
5x=5050
x=5050:5
x=1010