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larisa86 [58]
3 years ago
7

Please help me b minus 3/4 = 7/10

Mathematics
2 answers:
RoseWind [281]3 years ago
5 0
B - 3/4 = 7/10
add 3/4 to both sides to isolate the b
b = 7/10 + 3/4
b = 28/40 + 30/40
b = 58/40
b = 1  18/40
b = 1   9/20
Andrei [34K]3 years ago
5 0
B - 3/4 = 7/10
b = 3/4 + 7/10
b = 15/20 + 14/20
b = 29/20
b = 1 and 9/20
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Allisa [31]

Let, the age of Daniel be x years and Kevin be y years.

Given, Kevin is 3 years older than Daniel.

So we can write the equation as y=x+3

Also given, 2 years ago Kevin was 4 times as old as Daniel.

2 years ago, Daniel's age = (x-2) years

2 years ago, Kevin's age = (y-2) years.

So we can write the equation as (y-2) = 4(x-2)

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(y-2) = 4(x-2) ..... equation 2

Now we are plugging in the value of y from equation 1 to equation 2

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We will have to take x in one side. so let's move 4x to the left side by subtracting it to both sides.

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Step-by-step explanation:

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2 years ago
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nadezda [96]

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The equivalent multiplier when the interest is compounded monthly is the 12th root of this,

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___

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