Question

am nevoie va rog
rezolvati ecuatiile
a) 2x +7=9
b) x-16=5
c) 3x=27
d) 5x-100=25​

Answer 1

a) 2 x + 7 = 9

2 x = 9 - 7

2 x = 2 | : 2

x = 1

b) x - 16 = 5

x = 5 + 16

x = 21

c) 3 x = 27 | : 3

x = 9

d) 5 x - 100 = 25

5 x = 25 + 100

5 x = 125 | : 5

x = 25

Answer 2

Răspuns:

a) 2x +7=9

9-7=2

2÷2=1

b) x-16=5

5+16=21

c) 3x=27

27÷3=9

d) 5x-100=25

25+100=125

125÷5=25