Solve: 1/3(x-5)+2/15(x-1)=1/5(x+3)?
回答 (6)
2018-01-12 6:11 pm
(1/3)(x - 5) + (2/15)(x - 1) = (1/5)(x + 3)
[(1/3)(x - 5) + (2/15)(x - 1)] * 15 = (1/5)(x + 3) *15
5(x - 5) + 2(x - 1) = 3(x + 3)
5x - 25 + 2x - 2 = 3x + 9
4x = 36
x = 9
[(1/3)(x - 5) + (2/15)(x - 1)] * 15 = (1/5)(x + 3) *15
5(x - 5) + 2(x - 1) = 3(x + 3)
5x - 25 + 2x - 2 = 3x + 9
4x = 36
x = 9
2018-01-12 6:48 pm
5 x - 25 + 2x - 2 = 3x + 9
4x = 36
x = 9
4x = 36
x = 9
2018-01-12 6:45 pm
1/3(x-5)+2/15(x-1)=1/5(x+3)
Multiply each term by 15:
5(x-5) +2(x-1) = 3(x+3)
Expand:
5x -25 +2x -2 = 3x +9
Collect x to left, number to right:
4x = 36
Divide all terms by 4
x = 9
Multiply each term by 15:
5(x-5) +2(x-1) = 3(x+3)
Expand:
5x -25 +2x -2 = 3x +9
Collect x to left, number to right:
4x = 36
Divide all terms by 4
x = 9
2018-01-15 6:26 am
1/3(x-5)+2/15(x-1)=1/5(x+3)
15[1/3(x-5)+2/15(x-1)=1/5(x+3)]
5(x - 5) + 2(x - 1) = 3(x + 3)
5x - 25 + 2x - 2 = 3x + 9
7x - 27 = 3x + 9
4x = 36
x = 9
15[1/3(x-5)+2/15(x-1)=1/5(x+3)]
5(x - 5) + 2(x - 1) = 3(x + 3)
5x - 25 + 2x - 2 = 3x + 9
7x - 27 = 3x + 9
4x = 36
x = 9
2018-01-13 12:57 am
1/3(x - 5) + 2/15(x - 1) = 1/5(x + 3)
5(x - 5) + 2(x - 1) = 3(x + 3)
7x - 27 = 3x + 9
4x = 36
x = 9
5(x - 5) + 2(x - 1) = 3(x + 3)
7x - 27 = 3x + 9
4x = 36
x = 9
2018-01-12 8:49 pm
(1/3)(x-5)+(2/15)(x-1) = (1/5)(x+3)
multiply both sides by 15
5(x-5) + 2(x-1) = 3(x+3)
5x-25 + 2x - 2 = 3x + 9
7x-27 = 3x+9
7x-3x = 9+27
4x=36
x=9
multiply both sides by 15
5(x-5) + 2(x-1) = 3(x+3)
5x-25 + 2x - 2 = 3x + 9
7x-27 = 3x+9
7x-3x = 9+27
4x=36
x=9
收錄日期: 2021-04-18 18:05:13
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