Question

1) Questão
5x-3 - 3x+8 = 6x-3+  x
  4        2        3        2

2)x+3  =  5
     8      4

Answer 1

a) $\frac{5x-3}{4} - \frac{3x+8}{2} = \frac{6x-3}{3} + \frac{x}{2}$

Realizando o mmc dos denominadores -- > mmc = 12

3 . (5x - 3) - 6 (3x + 8) = 4 (6x - 3) + 6 (x)
15x - 9 - 18x - 48 = 24x - 12 + 6x
15x - 18x - 24x - 6x = -12 + 48 + 9
- 27x = 45

x = $\frac{45}{-27}$

x = $\frac{5}{3}$

b)$\frac{x+3}{8} = \frac{5}{4}$

4. (x + 3) = 8 . 5
4x + 12 = 40
4x = 28

x = $\frac{28}{4}$

x = 7

Answer 2

1)
5x-3/4 - 3x+8/2 = 6x-3/3 + x/2        MMC de 4,2,3,2 = 12
15x-9/12 - 18x+48/12 = 24x-12/12 + 6x/12
15x-9 - 18x+48 = 24x-12+6x
15x -18x-24x-6x = -48 +9
15x-48x=-39
-33x=-39  (-1)
33x=39
x=39/33

2)
x+3/8 = 5/4         mmc de 8,4 = 8
x+3/8=10/8
x+3=10
x=10-3
x=7