Question

Resolva as equações e dâ a solução: me ajuda pfv

a) 2-3x=-9-4-4x

b)-30x=9000

c)-10x+7=+4x-13x

d)39x+68=0

e)3/4x=2+2/3x(MMC)

f)-5(-x-4)=-5

g)2x-3=7-2.(2x-13)​

Answer 1

a)
2-3x=-9-4-4x
-3x + 4x = -9 -4 -2
1x = -13 -2
1x = -15
x = -15/1
x= -15

b)
-30x = 9000
x = 9000/-30
x = -300

c)
-10x+7=+4x-13x
-10x -4x +13x = -7
-14x + 13x = - 7
-1x = -7
x= -7/-1
x= 7

d)
39x+68=0
39x= 0 -68
39x= -68
x= -68/39