Question

a)
x-y=5
y=3-x
b)
x=2y-1
2x+3y=12 Putin ajutor va rog

Answer 1

inlocuim y cu x

a) x-3-x=5

2x=5+3

x=4

y=3-4 = -1

b)inlocuim x cu y

2y-1 ×2 +3y=12

4y-2+3y=12

7y=12+2

y=14÷7

y=2

x=2×2-1

x=4-1=3

Answer 2

1. -1 (y= 3-4)
2. 3 (x= 4-1)
succes!