Answer:
one solution : (7 ; - 1)
Step-by-step explanation:
hello :
X + 2 y = 5 ...(*)
y=2x – 15...(**)
use(**) put the value of y into (*) : x+2(2x-15)=5
x+4x-30=5
5x= 35
x=35/5=7
but : y =2x-15
so : y=2(7)-15=-1
