Step-by-step explanation:
because we can also find out the value of x in second equation like this
3x=21
x=21/3
x=7
Expressions can be represented as equations, and vice versa.
A possible situation is as follows:
<em>John is 15 years old, and his age is 3 more than 5 times his brother's age</em>
The equation is given as:

This means that:
- 15 represents John's age
- P represents his brother's age
- 5 and 3 are the constants that relate their ages
Read more about word equations at:
brainly.com/question/20518082
Answer:
ok
Step-by-step explanation:
mark me brilliant
plzzz
Answer:
no
Step-by-step explanation:
perpendicular means that they intersect at a 90° angle
A. Multiple the input by 11.