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IceJOKER [234]
3 years ago
11

How to solve equation x/6 + 7 = 20?

Mathematics
2 answers:
Anon25 [30]3 years ago
6 0
X/6 + 7 =20
x/6 =13
x = 13x6
=78
hoa [83]3 years ago
4 0
X/6 + 7 = 20

subtract 7 from each side

x/6 + 7 - 7 = 20 - 7
x/6 = 13

multiply each side by 6 to get x alone

x/6 • 6 = 13•6
x = 78
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Step-by-step explanation:

The speed, distance time formula is:

Speed(s)=\frac{Distance(d)}{Time(t)}

Given:

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Then the relation between distance and time is:

s=\frac{d}{t} \\30=\frac{d}{t}\\d=30t...(i)

If Speed was 60 miles/hour the time taken is (t-\frac{1}{4}) hours.

Then the relation between distance and time is:

s=\frac{d}{t} \\60=\frac{d}{(t-\frac{1}{4}) }\\d=60t-15...(ii)

Use the value of <em>d</em> = 30t in (ii)

<em />d=60t-15\\30t=60t-15\\30t=15\\t=\frac{1}{2} hour<em />

Determine the distance as follows:

d=30t\\=30\times\frac{1}{2} \\=15\ miles

Thus, the distance between Harry’s home and his office? is 15 miles.

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