Question

Exercițiul 4 va rogg

Answer 1

a) x+2/3=7/3
3x+2=7
3x=7-2
3x=5
x=5/3

b) 3/4+x=4/4
3+7x=4
7x=4-3
7x=1
x=1/7

c)3/7-2/35=x
3x5-2=35x
15-2=35x
35x=13
x=13/35

d)11/5+x=22/7
x=22/7-11/5
x=(22x5-11x7)/35
x=(110-77)/35
x=33/35

e) 22/3-x=22/7
x=22/3-22/7
x=(22x7-22x3)/21
x=(154-66)/21
x=88/21

f) 5/12=26/15-x-19/60

5x5=26x4-60x-19
25=104-60x-19
25=85-60x
60x=85-25
60x=60
x=60:60
x=1

g) x-8/3=1/24
24x-8x8=1
24x-64=1
24x=64+1
24x=65
x=65/24