solve by systems of liner equation by substitution

Answer:
1. ( x, y ) = ( 1, 4 )
2. ( x, y ) = ( -2, 3 )
3. ( x, y ) = ( -3, -5 )
Step-by-step explanation:
yan yung sagot ko
Answer:
1. 31
2.22
3.28
Step-by-step explanation:
hindi ko po sure kung tama