carolynhstevens
22.11.2019 •
Mathematics
3x + x + x + x − 3 − 2 = 7 + x + x in the equation above, what is the value of x?
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Ответ:
x=3
Step-by-step explanation:
3x + x + x + x − 3 − 2 = 7 + x + x
Combine like terms
6x -5 = 7+2x
Subtract 2x from each side
6x-2x -5 = 7+2x-2x
4x-5 =7
Add 5 to each side
4x-5+5 = 7+5
4x =12
Divide by 4
4x/4 = 12/4
x = 3
Ответ:
500miles = x 1 gallon=2.599
27x=500
x=500/27
x=18.51 gallon for 500miles
18.51×2.599= 48.13$
Answer is D