解:5/6+7/8等于( 41/24 ) ∵已知需求出5/6+7/8等于多少 X + Y = Z ∴5/6 + 7/8 = (5×4)/(6×4)+(7×3)/(8×3) = 20/24 + 21/24 = (20+21)/24 = 41/24 答:5/6+7/8等于41/24
5/6+7/8=20/24+21/24 =41/24
原式=20/24+21/24=41/24