Answer:
19
Step-by-step explanation:
x+y=25 => x=-y+25
x= 2y+7
x=-y+25
x=2y+7
subtract the first equation from the 2nd
0=3y-18
y=6
x=19
Answer:
19 and 6
Step-by-step explanation:
x(the big number) y (the small number)
x=2y+7
x+y=25
2y+7+y=25
3y=18
y=18/3=6
x+6=25
x=25-6=19
