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Anni [7]
3 years ago
10

sophia is 6 years older than her brother eric. the sum of their ages is 28. write and solve an equation to find sophia and Eric'

s ages
Mathematics
1 answer:
zimovet [89]3 years ago
6 0

s = 6 + e

s + e = 28

We can use this system of equations to find the exact values of s and e.

We have a current value of s, so we can find the exact value of e now.

e + e + 6 = 28

<em><u>Combine like terms.</u></em>

2e + 6 = 28

<em><u>Subtract both sides by 6.</u></em>

2e = 22

<em><u>Divide both sides by 2.</u></em>

e = 11

Now we have an exact value of e, and can solve for the value of s.

s = 6 + 11

s = 17

Sophia is 17 years old, and Eric is 11 years old.


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