回答: #m = 9# 説明: #7m + 4m = 11m# #11m = 99# #m = 9# 回答: #m = 9# 説明: #m(7 + 4)= 99# #11m = 99 // - :11# #(11m)/ 11 = 99/11# #(色(赤)キャンセル11m)/色(赤)キャンセル11 = 9# #m = 9#