若 5≥x≥3 化简|x-7|+|5-x|
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若 5≥x≥3 化简|x-7|+|5-x|
若 5≥x≥3 化简|x-7|+|5-x|
若 5≥x≥3 化简|x-7|+|5-x|
∵ 5≥x≥3
∴x-7<0; 5-x≥0
∴|x-7|+|5-x|=7-x+(5-x)=12-2x
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填九宫格帮帮忙.x x 6 x x 7 x x 98 x x x 3 x 1 x x 9 x x 6 x 5 x 3 x x x 3 x x x x 1 8x x x 9 x 1 x x x2 1 x x x x 6 x x x 6 x 7 x 3 x x 1 x x 9 x 2 x x x 47 x x 8 x x 5 x x
若 5≥x≥3 化简|x-7|+|5-x|
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