Question

Is 7 a solution for -7 = -56 + 7t yes or no

Answer 1

YES

Explanation:

`\bold{METHOD\ 1:}\\\\\text{Put}\ t=7\ \text{to the equation}\ -7=-56+7t,\ \text{and check equality}\\\\-7=-56+7(7)\\-7=-56+49\\-7=-7\qquad\bold{CORRECT}`

`\bold{METHOD\ 2:}\\\text{solve the equation:}\\\\-7=-56+7t\qquad\text{add 56 to both sides}\\\\-7+56=-56+56+7t\\\\49=7t\qquad\text{divide both sides by 7}\\\\(49)/(7)=(7t)/(7)\\\\7=t\to t=7`

Answer 2

yes

Explanation:

multiply 7x7 and you will get 49. Then do 49- 56 and you will get -7. So the statement is true.