Question 170282

{{{x+(x+1)+(x+2)=12}}} Start with the given equation.



{{{x+x+1+x+2=12}}} Remove the parenthesis



{{{3x+3=12}}} Combine like terms on the left side.



{{{3x=12-3}}} Subtract {{{3}}} from both sides.



{{{3x=9}}} Combine like terms on the right side.



{{{x=(9)/(3)}}} Divide both sides by {{{3}}} to isolate {{{x}}}.



{{{x=3}}} Reduce.



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Answer:


So the answer is {{{x=3}}} which means that the following sides are:


x: 3 units


x+1: 4 units (just add 1 to 3)


x+2: 5 units (just add 2 to 3)



Take note that 3+4+5=7+5=12 so this confirms our answer.