1、0.375×(7/ 15)+37.5%×(8/ 15) =0.375×(7/ 15)+0.375×(8/ 15) =0.375×[(7/ 15)+(8/ 15)] =0.3752 、 [(? 0? 6-? 0? 5) × (4/5) ]× 40% = [(1/4 )× (4/5) ]× 40% = (1/5 )× (2/5) = 2/253, 0.86+8.6×. Solution: Let this number be x, and according to the meaning of the question, we can get the equation: 20%X=36 X=36÷0.2 X= 180, which is 0.6 less than 75% of 12.8. What's this number? Solution: Let this number be X, and get the equation according to the meaning of the question: X+0.6 =12.8× 75% X =12.8× 0.75-0.6x = 9.6-0.6x = 980. What percentage is less than 120? Solution: Let 80 be X% smaller than 120, and get the equation according to the meaning of the question: 80 =120× (1-x%) 80 =120-1.2x =/kloc-0. Solution: Let 40% of it be X. According to the meaning of the question, the equation is: x÷ 40 %× 2/3 = 40 x÷ 0.4 = 40 ÷ 2/3 x÷ 0.4 = 60 x = 60 x 0.4 x = 24 to solve the application problem of a car from A to B. What is the total length of A and B? Solution: Let the total length of Party A and Party B be x kilometers. According to the equation: 25% x+30% x = 220 55% x = 220x = 220 ÷ 0.55x = 400. For a project, it takes 12 days for Team A to do it alone, and 12 days for Team B to do it alone. Solution: (110-1/2) ÷112 =1/00% How many kilograms did the two vegetables weigh? Solution: If the original weight of basket A is X kg and the original weight of basket B is (84-x) kg, the equation is obtained according to the meaning of the question. X (1-20%)+2 = 84-x+20% x-2x-0.2x+2 = 84-x+0.2x-21.6x = 80x = 50 84-50 = 34a: a basket weighs 50kg. What can be simplified should be simplified as 1.3* 7 and 4/5+7.8 * 7.7+7.8 =1.3× 7.8+7.8 = 7.8× (1.3+7.7+1). 8-1-7/12 = (4+10-1)+(5/6+7/8-7/12) =13+ 80=9/200+2/25= 1/8 (one sixth -0.75) divided by (one sixth+one third) * two seventh = (7/6-3/4) ÷ (16544) kloc-0/4+ 15/4)=(4-59/ 17)×( 10/3+ 15/4)=9/ 17×85/ 12= 15/4