Question

A)x+x+10+X+20+X+30+X+40 = 350 ????? me ajudem pfv
B)x+x+30+x+15 = 465
c)x/2 +4 = x-4 ????????????? me ajudem pfv

Answer 1

A)x+x+10+X+20+X+30+X+40 = 350
x + x + x + x + x = 350 - 10 - 20 - 30 - 40
5x = 250
x = 250 : 5 
x = 50

B)x+x+30+x+15 = 465
x + x + x = 465 - 30 - 15
3x = 420
x = 420 : 3
x = 140

C)x/2 +4 = x-4
x/2 + 4/1 = x/1 - 4/1                MMC de 2 e 1 = 2
x + 8 = 2x - 8
x - 2x = - 8 - 8
- x = -16  .(-1)
x = 16