# can someone help w/ my math? One of the problems are below, just tell me how to do it with the final answer?

5x-x=(-12)

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• 1 decade ago

5x-x=(-12)

you can always put a 1 in front of any variable that does not have number in front of it so...

5x-1x=(-12)

4x=(-12) (divide each sides by 4)

x= -3

if one if you divide one thing from another and only one of them is negative, your answer will always be negative

• Anonymous

well you start with 5x - x = -12.

first, simplify the left side to 4x because 5x - 1x = 4x. Get it?

so now the equation is 4x = -12. now divide each side by 4 to get rid of the 4 by the x. that now gives you, x = -4.

in general, you want to get x alone, and to do that, do the opposite of any number with x to cancel it out, but you also have to do the opposite of the other side. so if the equation was 4x - 3 = 13, you would first add 3 to each side, giving you 4x = 16, then you would divide each side by 4, giving you x = 4. just ask if you don't get it or need more help :)

Source(s): math
• 1 decade ago

5x-x= -12

4x=-12 divide! by 4 on both sides

x=(-3)

Source(s): If you need help e-mail me my teacher from algebra last year said I was great at solving equations
• 1 decade ago

Add all like terms. Which would give you 4x = -12

Then Divide both sides by 4

x = 3

• 1 decade ago

5x-x= -12

4x= -12

x= -12/4

x= -3

hope that helps

Source(s): math class
• Anonymous