Question

ayudaaaaa en vedad el que no tesponda bien lo reporto​

Answer 1

1)

3x + 2 × 5 = 42

3x + 10 = 42

3x = 42 - 10

3x = 32

x = 32/3

2)

x/4 + 5 = 10

x/4 = 10 - 5

x/4 = 5

x = 5 × 4

x = 20

3)

9/x + 7 = 21

9/x = 21 - 7

9/x = 14

14x = 9

x = 9/14