Question

1) 2x+2y=4 quando y=3.

Answer 1

2x + 2.3 = 4

2x + 6 = 4

2x = 4 - 6

2x = -2

x = -2/2

x = -1

Answer 2

quando y= 3

substituimos ficando assim :

2x + 2.3 = 4

2x + 6 = 4

2x= -2

x= -1