Question

PLEASE HELP What is the solution to the sentence ''A number decreased by -5 is at least 7''?

Answer 1

So a number degreased by -5 means a number +5 so
x-(-5)
is at least 7
x+5>7
so subtract 5 from both sides
x>2
the solution is any number more than, and  including, 2

Answer 2

n-5=7

add 5 to both sides

n=12