Question

a) 3(×+2)+4=19

b) 2(×+5)+3=25

c) 7(×-4)-5=9

d) 8(2×-3)+15=39​

Answer 1

Respuesta:

a)

3(x+2)+4=19

3x+6+4=19

3x=19-6-4

3x=9

x=9/3

x=3

b)

2(x+5)+3=25

2x+10+3=25

2x=25-10-3

2x=12

x=12/2

x=6

c)

7(x-4)-5=9

7x-28-5=9

7x=9+28+5

7x=42

x=42/7

x=6

d)

8(2x-3)+15=39

16x-24+15=39

16x=39+24-15

16x=48

x=48/16

x=3