Question

calcule o valor de x:
a) 2x-8=3x+

b)3x-8=1/3

C) 3X-1/4=2


D) -5X-1= -7

Answer 1

a) x= 8
b) x= -23:9 ou -23/9
c) x= 0,75
d) x= 6:5 ou 6/5

Answer 2

Oii, tudo bem?

a) 2x+8=3x ou 2x+8=3x
2x-3x=-8 +8=3x-2x
-x=-8 +8= x
x=-8/-1
x= 8

b)3x-8=1\3
3x=+8+1/3
3x=+8+0,333...
x= 8,333.../3
x= 2,77

c)3x-1/4=2
3x=2+0,25
x=2,25/3
x=0,75

d)-5x-1=-7
-5x=-7+1
-5x=-6
x=-6/+5
x=-1,2