Find a number whose product with 6 is the same as its sum with 60. (Hint: you may want to try guess and check or a table.) Be sure to check your answer for reasonableness.
Do you understand how to turn word problems into equations?
no
we are looking for a number in the end it'll be 6, or -3 or even 0 we just don't know yet so, until we do we'll call it x
OK with that idea?
yes
We know something about x we know that if we add 6 to it, we will have x + 6
sorry add 60
Do you understand that?
o ok so it would be 60x
add 60 will give x + 60 multiply by 6 will give 6x
o ok
really OK? The last fact we're given is that if add 60 to get x + 60 and separately, multiply by 6 to 6x those two new numbers are equal! x + 60 = 6x
ok
Do you know how to work with that equation so that it will be come x = something
no i need help with that too
The basic rule for equations is simple: do the same thing to both sides and you still have a valid equation. x + 60 = 6x what should we do?
subtract 6 from both sides
x + 60 - 6 = 6x - 6 x + 54 = 6x - 6 is it getting simpler?
yes
Nooooooo
Try subtracting x from both sides. After all, it's just a number
6+54=6
Back to the original, I mean: x + 60 = 6x x + 60 - x = 6x - x 60 = 5x is that simpler?
yea i quess
It looks simpler to me. What we did is isolating x on one side. Next we'll multiply both sides by something. What should it be?
60 = 5x 60 (1/5) = 5x (1/5) = x x = 12 Check your work. Is 12 + 60 = 6(12) ???
Gotta go. HTH
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