20=()+()+()=()×()×()填上合适的质数 20=()+() 10=()+() 10=()×()
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![20=()+()+()=()×()×()填上合适的质数 20=()+() 10=()+() 10=()×()](/uploads/image/z/3808699-43-9.jpg?t=20%3D%28%29%2B%28%29%2B%28%29%3D%28%29%C3%97%28%29%C3%97%28%29%E5%A1%AB%E4%B8%8A%E5%90%88%E9%80%82%E7%9A%84%E8%B4%A8%E6%95%B0+20%3D%EF%BC%88%EF%BC%89%2B%EF%BC%88%EF%BC%89+10%3D%EF%BC%88%EF%BC%89%2B%EF%BC%88%EF%BC%89+10%3D%28%29%C3%97%28%29)
20=()+()+()=()×()×()填上合适的质数 20=()+() 10=()+() 10=()×()
20=()+()+()=()×()×()填上合适的质数 20=()+() 10=()+() 10=()×()
20=()+()+()=()×()×()填上合适的质数 20=()+() 10=()+() 10=()×()
20 = 2 + 5 + 13 = 2 + 7 + 11
20 = 2 × 2 × 5
20 = 3 + 17 = 7 + 13 = 11 + 19 = 13 + 17
10 = 3 + 7 = 5 + 5
10 = 2 × 5