Question

2X + 9 = 8 b) 88w = 5-2w c) 3x +9 =81

Answer 1

a)
2x+9=8
2x=8-9
2x=-1
x=-1/2
Resposta: -1/2

b)
88w=5-2w
88w+2w=5
90w=5
w=5/90
w=1/18
Resposta: 1/18

c)
3x+9=81
3x=81-9
3x=72
x=72/3
x=24
Resposta: 24