Question

2X + 2 = 20
6x -25 = 7X -66
X +X +2X +3X = 84
25 - 2X = -5 +X

Answer 1

Respuesta:

2x + 2=20

2x = 20 - 2

2x = 18

x = 18 ÷ 2

x = 9

6x - 25= 7x-66

6x - 7x= -66 + 25

-1x = -41

x= -41 ÷(-1)

x = +41

x+x+2x + 3x=84

7x =84

x = 84÷7

x = 12

25-2x=-5x+x

-2x +5x - 1x= 0 +2

2x = 2

x = 2÷2

x = 1