Question

AYUDA PLIIIIIS, SI NO SABES NO RESPONDAS NADA PORFAVO, GRACIAS

Answer 1

1.

x + x + 2 = 66

2x + 2 = 66

2x = 66 - 2

2x = 64

x = 64/2

x = 32

32 + 34 = 66

2.

x = número de cajas

13x + 17x = 180

20x = 180

x = 180/20

x = 9

3.

x = cantidad de balones

5x + 10x = 90

15x = 90

x = 90/15

x = 6

5(6)+10(6)

30+60= 90