Answer:
Please check the explanation.
Explanation:
Given the equation
![(x)+(x+3) +3(x+3)-1=87](https://img.qammunity.org/2021/formulas/mathematics/high-school/cnz0eymejvoye5uvvu2ps3rp3gv2hpb1nc.png)
simplifying the equation
![x+x+3+3x+9-1=87](https://img.qammunity.org/2021/formulas/mathematics/high-school/jleboo81idbazz5ooxl8lx235d69zcksi5.png)
adding similar elements
![(x+x+3x)+(3+9-1-87)=0](https://img.qammunity.org/2021/formulas/mathematics/high-school/8oytzvykm8th3ohdktoju47rvtrpj4pm8h.png)
![5x-76=0](https://img.qammunity.org/2021/formulas/mathematics/high-school/rbjik90dcgg9n14znm6nrwhgsi1fbtevmb.png)
Thus, the equation is a linear equation in one variable 'x'.
A term is a single mathematical expression, so the simplified expression has two terms which are:
The term 5x has the variable 'x' of power 1.
The term -76 does not involve any variable, Hence, -76 is a constant term.