The sum of two numbers is x. If one of the numbers is 12, what is the other? 12 - x x - 12 12 + x 12 x
so you are given the sum of two numbers is x. (say the numbers are k and L)-(so L+k=12) one of those numbers is 12. (replace one of the letters there, say replace L with 12) so you are given 12+k=x just solve for other number (which we called k)
12+x
did you try solving for k ?
yeah
so how did you solve this equation for k 12+k=x
12+x just makes sense to me sum of two numbers 12 is one x is the outher
ok since you don't know how to solve the equation above for x I can give you one more way to look at this
you are given them of 12 and another number is x and they are asking what that other number is well 12+which of your choices give you x
choices: 12 - x x - 12 12 + x 12 x --- well is 12+(12-x) = x? or is 12+(x-12)=x? or is 12+(12+x)=x? or is 12+(12x)=x?
which of these equations are true
you are given the sum of 12 and another number is x *
12x
12x+12 how does this simplify to x?
idk im not good at algerbra
you don't have to be you have to be good at arithmetic for this question do you know what 12-12=?
12-12... if you have 12 apples and someone takes all 12 apples away then how many apples are you left with?
0
so what does this simplify to then: 12+(x-12)
you can rearrange it... 12-12+x
x-12
12-12+x = 0+x = x
and above solving this equation for k : 12+k=x you would subtract 12 on both sides -12 -12 --------------- k=x-12 just going back to how to do the previous way
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