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3x+x=4x. The 3x is just an easier way of stating x+x+x, and then you would just count the x's up like normal to create a total. You can also do this with larger numbers. For example, if you have 100x+500x, you would still add the numbers together to create a total of 600x. As long as the variables (x, in this case) are the same in the numbers you're adding (i.e., you can't add 3x+y together) you can just add the numbers to create your total.
4x
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What is 2X plus X plus 5 plus 3X-6?
2x+x+5+3x-6=6x-1
If 3x equal 7- 5x then x equal?
3x = 7-5x 8x=7 x = 7/8 x = 0.875
15 plus 3x 42 then x?
If 15 + 3x = 42, then x = 9
What does x equal 5x plus 4 equals 3x-2?
5x + 4 = 3x - 2Subtract 4 from both sides:5x = 3x - 6Subtract 2x from both sides:2x = 6Divide both sides by 2:x = -3
3x plus 7 equals x plus 13?
3x + 7 = x + 13Subtract 7 from each side:3x = x + 6Subtract x from each side:2x = 6Divide each side by 2:x = 3
What does x plus x plus x equal?
x+x+x= 3x
What is 3x plus 7 13?
In the equation 3x plus 7 equals 13, x is equal to 2.
What is-73 plus 3x equals 15 plus 11x what does x equal?
x = -11
What is x-3x plus 2x-8x equal?
-8x
What is x-4x plus 3 equal to?
3-3x
What is 3(x plus 6) equal?
3x + 18
What is (x-2)(x plus 5)?
It is equal to: x^2 +3x -10
2x plus 20 equal 3x?
2x + 20 = 3x20 = 3X - 2X20 = X
3x equals 1x plus 8 what does x equal?
3x = x+8 so 3x-x = 8 hence 2x = 8 and so x = 4
What does x equal if 3x-7 equals 5x plus 13?
If: 3x-7 = 5x+13 Then: x = -10
What does 3x equals x plus 4 equal?
3x = x + 4 x = 2 3x2=6 2+4=6
WHAT IS 17 plus 3X- 11 equals 0?
X= -2 ! Since the equation must equal zero - 17+3x must equal 11. The variable 3x HAS to equal -6... therefore x is equal to minus 2.
