Question

For value of v, determine whether it is a solution to 21=5v+1. Is -7 a solution

Answer 1

Hello.

Given the equation:

$\mathsf{\boxed{5v + 1 = 21}}$

Testing for v = -7

$\mathsf{5v + 1 = 21} \\ \\ \mathsf{5 \times (-7) + 1 = 21} \\ \\ \mathsf{-35 +1 = 21} \\ \\ \mathsf{-34 = 21}$

-34 does not equal 21. Therefore, '-7' is not a solution.

Hope I helped.

Answer 2

Wym for "is -7 a solution"?
To plug for v? No, the value for v is 4.
21 = 5(4) + 1, check it. It's good! K?