Answer:
The price after the discount would be $315.
8.49 x 10⁻⁷ = 0.000000849
Answer:
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Well just substitute y (the first equation) into the second equation.
So
5x-4(5-3x)=-3
Then just solve the equation from there.
5x-20+12x=-3
17x=17
x=1
and if you need y, y=2
Answer:4y
Step-by-step explanation: