Question

d) 7x + 8 = 4x - 10
e) 3m= m +1 +7
f) 5 + 6x = 5x - 2
G)4d-15=-2d+3
h)360-36x=30x
i)p+2p-1-3=p​

Answer 1

Explicação passo-a-passo:

D) 7x-4x= -10-8 >> 3x=-18 >> x=-18/3 = -6

E) 3m -m = 8 >> 2 m =8 >> m=8/2=4

F) 6x-5x=-2-5 >> x= -7

G) 4d + 2d = 3 + 15 >> 6d=18 >> d=18/6=3

H)360=36x+30x >> x=360/66 >> 5.45 na dízima periódica

I) p-p+2p=1+3 >> 2p=4 >> x=4/2 = 2