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the combined enrollment in the three grades at Jefferson Middle School is 977. there are 356 students in the 7th grade 365 in the 8th grade write and solve an equation to find how many students are in the ninth grade find an equation and a solution for the problem.

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356 + 365 + x = 977   where x is the number of students in the third grade.


to find x  subtract 356 and 365 from 977

x = 977-356-365 = 256

The equation of the given problem will be as; 356 + 365 + x = 977 . Therefore, there are 256 kids in the 9th grade.

What is a system of equations?

A system of equations is two or more equations that can be solved to get a unique solution. the power of the equation must be in one degree.

It is given that the combined enrollment in the three grades at Jefferson Middle School is 977. there are 356 students in the 7th grade 365 in the 8th grade.

Equation:

356 + 365 + x = 977  

where x is the number of students in the third grade.

Since there are 977 kids in total, we have to add 356 and 365 to get 721.

356 + 365 + x = 977  

721 + x = 977  

Then subtract 721 from 977 to get how many kids are in 9th grade.

x = 977 - 721

x = 256

Therefore, there are 256 kids in the 9th grade.

Learn more about equations here;

https://brainly.com/question/10413253

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