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3 years ago

What's the sum of 14 and a number is equal to 17

Mathematics

2 answers:

horrorfan [7]3 years ago

7 0

N - the number

14 + n = 17 |subtract 14 from both sides

n = 3

igor_vitrenko [27]3 years ago

7 0

The sum (addition) of 14 and a number (x) is equal to (=) 17.

14 + n = 17 Subtract 14 from both sides
n = 3

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notka56 [123]

Answer:

1) $x=\dfrac12$

2) $n = -3 \ \ \textsf{and} \ \ m = -4$

3) see below

4) A: 0 = 1

Step-by-step explanation:

Question 1

$15-0.5(4x-2)+4x=17$

$\implies 15-2x+1+4x=17$

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Question 2

$\textsf{rearrange} \ n=m+1 :$

$\implies -m=-n+1$

$\textsf{add equations} \ -m=-n+1 \ \textsf{and} \ m=2n+2:\\$

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$\implies n=-3$

$\textsf{substitute} \ \ n=-3 \ \ \textsf{into} \ \ m=n-1:$

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$\implies m=-4$

Question 3

subtract the second equation from the first

divide both sides by -4

substitute found value for y into first equation

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Question 4

$3j=k$

$k=3j+1$

$\textsf{rearrange} \ 3j=k :$

$\implies -k=-3j$

$\textsf{add equations}\ -k=-3j \ \ \textsf{and}\ \ k=3j+1:$

$\implies 0=1$

Solution = A

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A + s = 480......s = 480 - a
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