Question

Encontre o valor de X nas expressões abaixo:
A) 2x + 5= 83
B)3x - 10= x + 7
C)x/4 + 5= 0
D)5 + 5x - 13= -5 + 6x + 1 - 7x
E)5 (13-3x)= 9x + 143 + 4 (x+2)

Answer 1

A) 2x=83-5

2x=78

X=78÷2 = X=39

B) 3x-x=7+10

2x=17. X=17/2 X=8.5

C) x+9=0 X= -9

Answer 2

A) 2x=83-5

x=78/2

x=39

B)3x-x=7+10

2x=17

x=17/2

x=8,5

C)x=-5.4

x=-20

D)5-13+5-1=6x-7x-5x

-4=4x

-4/4=x

x=-1

E)65-15x=9x+143+4x+8

65-143-8=9x+4x+15x

-86=28x

-86/28=x

x=-43/14