Question

Resolva
1)X/2 + 3x/5=11
2)X×2/3=8
3)4x/3-5x=2+x/3

Answer 1

1)
x/2+3x/5=11
5x/10+6x/10=110/10
11x=110
x=110/11
x=10

2) x*2/3=8
2x/3=8
x=8/3/2= 8x2/3
=16/3

3) 4x/3-5x=2+x/3
4x/3-15x/3=6/3+x/3
-11x=6+x
-11x-x=6
-12x=6 *(-1)
12x=-6
x= -6/12
x= -1/2