Question

Ajuda pra montar essas equações

obrigada!!

Answer 1

d) (x - 1)/2 + (x - 2)/3 = (x - 3)/4 ---- 6x - 6 + 4x - 8 = 3x - 9

10x - 3x  = - 9 + 14 ------- 7x = 5 ----- x = 5/7


e) (2x - 3)/4 - (2 - x)/3 = (x - 1)/3  ----- 6x - 9 - 8 + 4x = 4x - 4

10x - 4x = - 4 + 9 + 8 ----- 6x = 13 --- x = 13/6


f) (3x - 2)/4 = (3x + 3)/8 ------ 6x - 4 = 3x + 3 ----- 6 x - 3x = 3 + 4

3x = 7 ------ x = 7/3


g) (3x + 5)/4 - (2x - 3)/3 = 3 ------ 9x + 15 - 8x + 12 = 36 ----- x = 36 - 27

x = 9


h) x/5 - 1 = 9 ----- x/5 = 9 + 1 ----- x/5 = 10 ------ x = 10 .5 ----- x = 50


i) x/3 - 5 = 0 -----x/3 = 5 ----- x = 5 . 3 ----- x = 15


j) x/2 + 3x/5 = 6 -----5x + 6x = 60 ---- 11x = 60 ---- x = 60/11


l) 5x - 10 = (x + 1)/2 -------10x - 20 = x + 1 ---- 10x - x = 1 + 20 ---- 9x = 21

x = 21/9 ----- x = 7/3


m) (8x - 1)/2 - 2x = 3 --------8x - 1 - 4x = 6 ------ 4x = 6 + 1 ----- 4x = 7

x = 7/4


o) (x - 1)/2 + (x - 3)/3 = 6 ----- 3x - 3 + 2x - 6 = 36 -------- 5x = 36 + 9

5x = 45 ----- x = 45/5 ----- x = 9


p) (5x - 7)/2 = 1/2 + x ---- 5x - 7 = 1 + 2x ----- 5x - 2x = 7 + 1 ------  3x = 8

x = 8/3


q) (2x - 1)/3 = x - (x - 1)/5 --- 10x - 5 = 15x - 3x + 3 --- 10x - 12x = 3+ 5

- 2x = 8 ----- x = - 8/2 ----- x = - 4