SOLUTION: 3+8x=21-x

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Question 213141: 3+8x=21-x
Found 2 solutions by checkley77, drj:
Answer by checkley77(12844) About Me  (Show Source):
You can put this solution on YOUR website!
3=8x=21-x
You have one too many = signs.

Answer by drj(1380) About Me  (Show Source):
You can put this solution on YOUR website!
3%2B8x=21-x
The following steps will solve the above equation:

Solved by pluggable solver: EXPLAIN simplification of an expression
Your Result:


YOUR ANSWER


  • This is an equation! Solutions: x=2.
  • Graphical form: Equation 3%2B8x=21-x was fully solved.
  • Text form: 3+8x=21-x simplifies to 0=0
  • Cartoon (animation) form: simplify_cartoon%28+3%2B8x=21-x+%29
    For tutors: simplify_cartoon( 3+8x=21-x )
  • If you have a website, here's a link to this solution.

DETAILED EXPLANATION

Look at highlight_red%28+3+%29%2B8%2Ax=21-x.
Moved 3 to the right of expression
It becomes 8%2Ax%2Bhighlight_green%28+3+%29=21-x.
Look at 8%2Ax%2B3=highlight_red%28+21+%29-x.
Moved 21 to the right of expression
It becomes 8%2Ax%2B3=-x%2Bhighlight_green%28+21+%29.
Look at 8%2Ax%2B3=highlight_red%28+-x%2B21+%29.
Moved these terms to the left highlight_green%28+x+%29,highlight_green%28+-21+%29
It becomes 8%2Ax%2B3%2Bhighlight_green%28+x+%29-highlight_green%28+21+%29=0.
Look at 8%2Ax%2Bhighlight_red%28+3+%29%2Bx-highlight_red%28+21+%29=0.
Added fractions or integers together
It becomes 8%2Ax%2Bhighlight_green%28+-18+%29%2Bx=0.
Look at 8%2Ax%2Bhighlight_red%28+-18+%29%2Bx=0.
Moved -18 to the right of expression
It becomes 8%2Ax%2Bx%2Bhighlight_green%28+-18+%29=0.
Look at 8%2Ax%2Bx%2Bhighlight_red%28+-18+%29=0.
Removed extra sign in front of -18
It becomes 8%2Ax%2Bx-highlight_green%28+18+%29=0.
Look at highlight_red%28+8%2Ax+%29%2Bhighlight_red%28+x+%29-18=0.
Eliminated similar terms highlight_red%28+8%2Ax+%29,highlight_red%28+x+%29 replacing them with highlight_green%28+%288%2B1%29%2Ax+%29
It becomes highlight_green%28+%288%2B1%29%2Ax+%29-18=0.
Look at %28highlight_red%28+8+%29%2Bhighlight_red%28+1+%29%29%2Ax-18=0.
Added fractions or integers together
It becomes %28highlight_green%28+9+%29%29%2Ax-18=0.
Look at highlight_red%28+%28highlight_red%28+9+%29%29%2Ax+%29-18=0.
Remove unneeded parentheses around factor highlight_red%28+9+%29
It becomes highlight_green%28+9+%29%2Ax-18=0.
Look at highlight_red%28+9%2Ax-18+%29=0.
Solved linear equation highlight_red%28+9%2Ax-18=0+%29 equivalent to 9*x-18 =0
It becomes highlight_green%28+0+%29=0.
Result: 0=0
This is an equation! Solutions: x=2.

Universal Simplifier and Solver


Done!




I hope the above steps were helpful.

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Good luck in your studies!

Respectfully,
Dr J