Answer:
Matt 63, Emily 27
Step-by-step explanation:
You have two incognita here: Matt's age and Emily's age.
You also know that Matt is nine years older than twice Emily's age, and they both ages sum 90.
If Matt is and Emily is , you can say years and years.
Now you have two equations and two incognitas, you can solve it.
First, clear the x and equal both equation
Then, solve and found the value of Y and now, can resolve the X
Go back to X equation