Step-by-step explanation:
6-20/3=14/3..........
Answer:
2×3.14×r=75
6.28 r=75
r=75/6.28=11.943=12 inch (nearly)
Its a simultaneous equation:
lets make "x" the used games and "y" the new ones
4x + 2y = 84
6x + y = 78. (multiply this by 2 to cancel out y)
12x + 2y = 156
so now we subtract them:
12x - 4x = 156 - 84
x = 9
used games cost $9
new games cost 78 - 6(9) = $24
Janet has $120 but she already bought 3 NEW games so:
120 - 3(24) = $48 left
48/9 = how many used ones she can buy = 5. something
she can buy 5 used
It can be simplified by dividing 10 on both the numerator and the denominator.
100/10=10
2670/10=267
So the simplified answer is 10/267.
