Question

resolva as equações abaixo

e)3×+7=32
f)7×-9=27
g)21×-50=-49
h)5×+8=3×+12
i)-50×+8=70×-15​

Answer 1

e)3×+7=32

3x = 32 - 7

3x = 25

x= 25/3

f)7×-9=27

7x = 27 + 9

7x = 36

x= 36/7

g)21×-50=-49

21x = - 49 + 50

21x = 1

x= 1/21

h)5×+8=3×+12

5x - 3x = 12 - 8

2x = 4

x= 4/2

x= 2

i)-50×+8=70×-15

- 50x - 70x = - 15 - 8

- 120x = 23 (-1)

120x = - 23

x= - 23/120