在下列算式中适当的地方,填上括号,使算式成立。5?*K1N/P0A)x5M:Z
(1)1+2×3+4×5+6×7+8×9=10055?*K1N/P0A)x5M:Z
算式:提示'H9G*d6m8W5?*K1N/P0A)x5M:Z
(2)1+2×3+4×5+6×7+8×9=17175?*K1N/P0A)x5M:Z
算式:提示7K,y4i3H;g1_6B5?*K1N/P0A)x5M:Z