Question

valor de la incógnita 8X+6=30 7X+21=42 3X+15=66 2X-4=26​

Answer 1

Explicación paso a paso:

8X+6=30

8x = 30-6

8x = 24

X = 24/8

X = 3

7X+21=42

7x = 42 - 21

7x = 21

X = 21/7

X = 3

3X+15=66

3x = 66-15

3x = 51

X = 51/3

X = 17

2X-4=26

2x = 26+4

2x = 30

X = 30/2

X = 15