Question

Check whether p=-2 is a solution of the equation 7p-5=20 or not ...​

Answer 1

no

Explanation:

here, the equation be,

or, 7p-5=20

or, 7×(-2) - 5 = 20

or, -14-5=20

or, -19=20 which is can't be.

so ans is no

Answer 2

not a solution

Explanation:

Substitute p = - 2 into the left side of the equation and if equal to the right side then it is a solution.

7(- 2) - 5 = - 14 - 5 = - 19 ≠ 20

Then p = - 2 is not a solution of the equation