Question

1-Vamos resolver as Seguintes equaçãoes


A)2X=-16
B)7X=4X+5
C)2X-8=8
D)7Y-4=10
E)9X+5=4X
F)20X-13=20+9X​

Answer 1

a) 2x = -16  ⇔ x = -8

b) 7x = 4x + 5  ⇔ 3x = 5 ⇔ x = 5/3

c) 2x - 8 = 8  ⇔ 2x = 16 ⇔ x = 8

d) 7y - 4 = 10  ⇔ 7y = 14 ⇔ y = 2

e) 9x + 5 = 4x  ⇔ 5x = 5 ⇔ x = 1

f) 20x - 13 = 20 + 9x​