Can you explain this? math problem? please help!!!?

7 Answers

• first distribute the 21

  42 - 21x + 12x = 44

  combine the x's

  42 - 9x = 44

  then subtract 42 from both sides

  -9x = 2

  divide both sides by -9

  x = -2/9

• First, you distribute the 21 to everything in the parenthesis. That would give you 42-21x+12x=44.

  Second, you combine like terms: 42-9x=44

  Third, subract 42 from boith sides: -9x=2

  Fourth, divide both sides by -9: x= 2/-9

  Source(s): Im an eighth grader in algebra 1

• ok. here are the steps and how they're done.

  1. 42 - 21x + 12x = 44. (distributive property.)

  2. 42 - 9x = 44 (-21x + 12x)

  3. -9x = 2 (subtract 42 from both sides)

  4. x = -2/9 (divide both sides by -9)

  if that's not right, well it's late, I'm tired, and I did that in my head.

• step one: distribute the 21 over the (2-x). so you have 42+21x+12x=44.

  step two: combine like-terms; add the 21x and 12x together. now you have 42+33x=44.

  step three: subtract the 42 from both sides, now you have 33x=2.

  step four: divide both sides by 33 and you have x=2/33

• multiply (2-x) by 21 to get 42-21x+12x=44

  combine like terms of -21x and 12x to get 42-9x=44

  get the variable alone on one side by first subtracting 42 on both sides to get -9x=2

  then get the variable alone further by dividing -9 on both sides to get x=negative 2/9

  i hope this helps

• it's very easy......

  21(2)+21(-x)+12x=44

  42-21x+12x=44

  42-44=21x-12x

  -2=9x

  x=-2/9

• try paying attention in class