Question

Resolva as esquaçoes do 1° grau

a) 7x+17=10
b) 7x+17=16
c) 5x-40=60
d) 3x-64=100
e) 10y-7=-1

Answer 1

a) 7x + 17 = 10

7x = 10 - 17

7x = - 7

x = -7/7

x = - 1


b) 7x + 17 = 16

7x = 16 - 17

7x = - 1

x = - 1/7


c) 5x - 40 = 60

5x = 60 + 40

5x = 100

x= 100/5

x = 20


d) 3x - 64 = 100

3x = 100 + 64

3x = 164

x = 164/3

x ≈ 55


e) 10y - 7 = - 1

10y = - 1 + 7

10y = 6

y = 6/10


Espero ter ajudado!!