4x=20-8y
x=5-2y now use this value of x in the second equation...
3(5-2y)+6y=15
15-6y+6y=15
15=15 This is true for any y or x value.
So there are infinitely many solutions as the two equations describe the same line.
Answer:
256.8
Step-by-step explanation:
the tenths place is the first number after the decimal.
The reciprocal of -13/7 should be -7/13