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3 years ago

7

Three sets of a sum of a number and four are added to the sum of 7 times the same number and 13

1 answer:

Reika [66]3 years ago

5 0

Let
x--------------> a number

we know that
<span>three sets of a sum of a number and four----------> 3(x+4)
t</span><span>he sum of 7 times the same number and 13--------> 7x+13

therefore

</span>(Three sets of a sum of a number and four) are added (to the sum of 7 times the same number and 13) ----------> [3(x+4)] + [7x+3]

[3(x+4)] + [7x+3]------> [3x+12] + [7x+3]=10x+15

the answer is 10x+15

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Step-by-step explanation:

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b) Reflection in the line y=x swaps the x- and y-coordinates:

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Step-by-step explanation:

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