Question

ayuda por fa doy corona ​

Answer 1

4x + 6x + 7 = 3x + 21

10x - 3x = 21 - 7

7x = 14

x = ¹⁴/7

x = 2

Comprobación

4x + 6x + 7 = 3x + 21

4 (2) + 6 (2) + 7 = 3 (2) + 21

8 + 12 + 7 = 6 + 21

27 = 27

20x + 7 - 3 = 15x + 19

20x - 15x 4= 19

5x = 19 - 4

5x = 15

x= ¹⁵/5

x= 3

Comprobación

20x + 7 - 3 = 15x + 19

20 (3) + 7 - 3 = 15 (3) + 19

60 + 7 - 3 = 45 + 19

64 = 64