Question

-3(x-5) =45

-3x-15=45
45-35=10
some one check this for me

Answer 1

-3(x-5) =45

-3x-15=45 No, -3 * -5 = +15
45-35=10 no idea what you are doing here

if -3 * - 5 = +15
then
-3x + 15 = 45 now subtract 15 from both sides
-3 x + 0 = 30
divide both sides by - 3
x = -10

NOW check
if x = -10
-3(x-5) =45
is
-3 (-15) = 45
45 = 45 YES!