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one number is seven less than a second number. Three times the first is 11 more than 5 times the second. Find the numbers.

User Sajin
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1 Answer

3 votes

Answer:

Explanation:

Solve the problem using algebraic equations. Let's assume the first number is represented by "f" and the second number is represented by "s".

So according to the given question:

"One number(f) is seven less than a second number(s)":

f = s - 7

"Three times the first(f) is 11 more than 5 times the second(s)":

3f = 5s + 11

Now we have a system of two equations. We can solve this system of equations to find the values of f and s.

Substituting the value of f from the first equation into the second equation:

3(s - 7) = 5s + 11

Simplifying:

3s - 21 = 5s + 11

Move all the s terms to one side and the constant terms to the other side:

3s - 5s = 11 + 21

-2s = 32

Dividing both sides by -2:

s = -16

Now substitute the value of s in the first equation to find f:

f = (-16) - 7

f = -23

So, the first number (f) is -23 and the second number (s) is -16

User Andrei Filimon
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