Using and resolving an equation, Jasmine is 39 years old.
An equation is the equality between two algebraic expressions connected through the equality sign in which one or more unknown values appear, in addition to certain known data.
In other words, an equation is defined as an established equality between two expressions, in which there may be one or more unknowns that must be solved.
Each equation has two members, and these are separated by using the equal sign (=), which in turn each member is made up of terms.
In this case, you have:
- J=jasmine's age
- S=sister's age
You know that Jasmine is 5 years younger than twice her sisters age. So, the equation to solve is:
2×S -5= J
On the other side, you know that Jasmine's sister is 22 years old. This is: S=22. So , substituting in the previous equation:
2×22 -5= J
Solving:
44 -5= J
39 years old= J
Finally, Jasmine is 39 years old.
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