Question

Equacões!!!

a-12x+4=5-3x
b-5x-4=11
c-2x-3=5
d-3+5x-2x=-8
e-x+x+x=9
f-8x+9x=24+x

Answer 1

a 12x+4=5-3x
12x+3x-4-5
15x=-1
15:-1
-15
o valor e igual a -15 e menos 15 não tem raiz então o final e = 0

Answer 2

a) 12x+4=5-3x
12x+3x=5-4
15x=1
x=1/15         

b) 5x-4=11
5x=11-4
5x=7
x=7/5

c) 2x-3=5
2x=5+3
2x=8
x=8/2
x=4

d) 3-5x-2x=-8
5x-2x=-8-3
3x=-11
x=-11/3

e) x+x+x=9
3x=9
x=9/3
x=3

f) 8x+9x=24+x
8x+9x-x=24
16x=24
x=24/16 simplificando=> x=6/4