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3 years ago

An older person is 4 years older than 7 times the age of a younger person. The sum of their ages is 44. Find their ages

Mathematics

1 answer:

Fynjy0 [20]3 years ago

8 0

Answer:

5 yr and 39 yr

Step-by-step explanation:

Let x = the age of the younger

then 7x + 4 = the age of the older

Now x + 7x + 4 = 44

8x + 4 = 44

8x = 40

x = 5

7x + 4 = 7(5) + 4 = 35 + 4 = 39

Check: 5 + 39 = 44

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GIVING BRAINLIEST Try the numbers 4, 5, 6, 7 in the equation 6 ⋅ x + 5 = 12 + 5 ⋅ x

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<h3>6 is a solution to equation 6x + 5 = 12 + 5x</h3>

Solution:

Given equation is:

6x + 5 = 12 + 5x

Try the numbers 4, 5, 6, 7 in the equation to test whether any of them is a solution

Substitute x = 4

6(4) + 5 = 12 + 5(4)

24 +5 = 12 + 20

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Thus 4 is not a solution

Substitute x = 5

6(5) + 5 = 12 + 5(5)

30 + 5 = 12 + 25

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Thus 5 is not a solution

Substitute x = 6

6(6) + 5 = 12 + 5(6)

36 + 5 = 12 + 30

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Thus 6 is not a solution

Substitute x = 7

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3 years ago