Step-by-step explanation:
x+6=3x+21
2x=-15
x=-7.50
Answer:
x=-5, y=-1
Step-by-step explanation:
Substitute x=-4+y into -2x-5y=15. So we have
-2(-4+y)-5y=15
8-2y-5y=15
-7y=7
y=-1
And x is -4+y so x= -4+(-1)= -5.
25% of 64 is 16

it will work properly 16 times

it will not work 48 times
hope this helps