Question

sistem de ecuatii
(3x + y = 15
(2x - y = 5​

Answer 1

Răspuns:

2X=y+5

Y+5+y=15

2y=10

Answer 2

15-3=12

12÷2=6( x si y)

3×6+6=15

5-2=3(x)

2×3-y=5

6-y=5

y=1

cred ca asa