if the sum of two consecutive even numbers is 86.find the smaller number.
solution:let the smaller number be x.
then the larger number is ______________
equation:______________
maths~~
2007-08-31 9:18 pm
回答 (3)
2007-08-31 9:23 pm
✔ 最佳答案
Let x be the smaller number,so, the larger number will be (x + 2),
and, sum of these two consecutive even number is x + (x + 2)
If the sum is 86, it will get
x + (x + 2) = 86
Solve the equation,
2x + 2 = 86
2x = 86 - 2
2x = 84
so, x = 42.
The smaller number is 42 and the larger number is 44.
2007-08-31 9:28 pm
equation:
let the smaller number be x
x+x+2=86
..2x+2=86
......2x=84
........x=42
the larger number is _44_
the smaller number is_42_
let the smaller number be x
x+x+2=86
..2x+2=86
......2x=84
........x=42
the larger number is _44_
the smaller number is_42_
參考: me
2007-08-31 9:22 pm
let the smaller number be x
x+x+2=86
2x+2=86
2x=84
x=42
so the smaller number is 42 and the larger number is 44.
x+x+2=86
2x+2=86
2x=84
x=42
so the smaller number is 42 and the larger number is 44.
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