Question

a) x + y = -7, para (3, y).


b) 2x – y = 10, para (x, 2)​

Answer 1

3 + y = -7

3 + (-10) = -7

3 - 10 = -7

2x - y = 10

2x - 2 = 10

2x = 10+2

2x = 12

x= 12÷2

x= 6

2×6 - 2 =10

12 - 2 = 10