Question

Me ajudem nessas contas:

A) 3x/2+4/3=5
B) 5 (x+2)=-2 (x-3)
C) 2y/4=5

Answer 1

A)3x/2 + 4/3=5
3x/2 + 4 = 5*3
3x/2 + 4 =15
3x/2 =15 -4
3x = 11*2
3x=22
x = 22/3

B) 5(x+2) = -2 (x-3)
5x+10 = -2x +6
5x + 2x = +6 -10
7x = -4
x = -4/7

C)2y/4 = 5
2y= 5*4
y = 20/2
y =10

Answer 2

a) 3x/2 + 4/3 = 5

MMC de 2  e 3 = 6

3.3x  + 2.4 / 6 = 5 . 6
9x  + 8 / 6 = 30
9x + 8 = 30
9x  =  22
x = 22 / 9

===
b) 5 . (x + 2) = -2.(x - 3)
5x + 10 = -2x + 6
5x + 2x = 6 - 10
7x = -4
x = -4/7

===
c) 2y / 4 = 5

2y / 4 = 5 . 4
2y = 20
y = 20 / 2
y = 10