Find 3 consecutive integers whose sum is 171
Really need the help-thanks*math* How would you work this problem?
171=a+(a+1)+(a+2)
171=3a+3
174=3a
58=a
58,57,56*math* How would you work this problem?
Think of any 3 consecutive integers:
for example 1, 3, 5 the sum of these is 1+3+5=9
well, the first number is 1
the second number we got by adding two to the first 1+2=3
the third we got by adding four to the first: 1+4=5
but for your problem we dont know which number to start with so we call it n for now. To get the second number we add two to n.
for the third we add 4 to n
1st: n
2nd: n+2
3rd: n+4
n+(n+2)+(n+4)=171 Equation
3n+6=171 Combine like terms
3n=165 Subtract 6 from both sides
n=55 Divide by 3 to both sides
1st:55
2nd:55+2=57
3rd:55+4=59
Solution: 55,57,59
56, 57, 58.
They're consecutive integers, and they add up to 171.
x+x+1+x+2=171
group like things together...
3x+3=171
subtract 3 from each side...
3x=168
divide each side by 3...
x=56
56+57+58=171
x+(x+1)+(x+2)=171
3x=168
x=56
the numbers are 56,57, and 58
x is 1st integer.
x+(x+1)+(x+2)=171
3x+3=171
56,57,58
56+57+58=171
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