Question

If y-3=7 and x+3y=6 then x=?Show your work.

Accepted Answer

I can't answer x+3y=6 right now.  I have two variables (x and Y) so I'm stuck.
So, I turn to my other equation.  y-3=7.  If I add three to each side of the equation, I get y=10.
Now that I know y=10, I can put the number 10 in every place there was a "y."  So, the second equation looks like this...
x+3y=6
x+3(10)=6
x+30=6      So I subtract 30 from each side.
x=-24
 
I then check myself by putting all my numbers back into the original equations.
10-3=7 and -24+3(10)=6
Yep, that works.

Answer

y-3=7-----(i)
x+3y=6----(ii)
x=?
In order to find the value of x we must first find the value of y, to do that let us first consider equation (i): y-3=7
y-3=7-----(i)
y-3+3=7+3    (adding 3 on both sides)
y=10
Then, we input the value of y in equation (ii): x+3y=6
x+3y=6
Input the value of y in this equation i.e 10
x+3(10)=6
x+30-30=6-30     (subtract 30 from both sides)
x= -24 Answer.

Answer

If y-3=7 and x+3y=6 then x=?
First let's find what " y " equals
y - 3 = 7 add 3 on both sides
By adding, you should get
y = 10 which is what " y " equals 
Now plug 10 into the equation
x + 3 ( 10 ) = 6 multiply 3 with 10
By multiplying,  you should get
x + 30 = 6 now subtract 30 on both sides
By subtracting, your equation should look like
x = -24 which Is your answer

Answer

If y-3=7 and x+3y=6 then x=
we need ot get the unkown variables by themselves, and usually you start with the equation that only has one unknown variable, wheich would be y-3=7
you add three to both sides so the -3 goes away leaving you with the value of y
y=10
then you plug this value into the other equation x+3y=6
to give you X+ 3(10) = 6
X+30=6
then you do the same thing, you try to get the 30 onto the right side by subtracting 30 from both sides so it gives you the value of X
X= -24

Answer

y-3=7 and x+3y=6 then x=
y - 3 = 7
   +3   +3
y=10
plug in the number in the second problem
x+3(10)=6
x+30=6
  -30   -30
x= -24

Answer

If y-3=7 and x+3y=6 then x=?
First solve for y because we have enough information for that. 
y = 3 + 7 = 10
plug into the other equation: 
x + 3(10) = 6
x + 30 = 6
x = 6 - 30 = -24

Answer

y-3=7
y-3+3=7+3
y=10
x+3y=6
x+3(10)=6
x+30=6
x+30-30=6-30
x=-24

Answer

Well
x+3y=6   and y-3=7
(+3)y-3=7(+3)
y=10
 
x+3(10)=6
x+30=6
x= -24

Math

If y-3=7 and x+3y=6 then x=? Show your work.

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