Question

1- Resolva as seguintes equações.
a) 4x – 1 = 11 -
b) 9x + 6 = 87
c) 3x – 1 = 2
X
d) 11x + 12 = 5x
e) X-3 = 1
f) X + 5 = 8
g) 5x = 4x + 12
h) 2x = 24
m) 3y + 1 = 16
n) 9y – 2 = 7y
o) 3y + 1 = 2y​

Answer 1

Resposta:

a) x=3 | 4x=11+1 -> 4x=12 -> x=3

b) x=9 | 9x=87-6 -> 9x=81 -> x=9

c) x=1 | 3x=2+1 -> 3x=3 -> x=1

d) x=-2 | 11x-5x=-12 -> 6x=-12 -> x=-2

e) x=4 | x-3=1 -> x=11+3 -> x=4

f) x=3 | x=8-5 -> x=3

g) x=12 | 5x-4x=12 -> x=12

h) x=12 | 2x=24 -> 24/2=12 -> x=24

m) y=5 | 3y=16-1 -> 3y=15 -> y=5

n) y=1 | 9y-7y=2 -> 2y=2 -> y=1

o) y=-1 | 3y-2y=-1 -> y=-1