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解方程:x^2%x%4=1/x%1/x^2

(上)50%x+x=上50,&2bs下;&2bs下;&2bs下;&2bs下;&2bs下;&2bs下;&2bs下;&2bs下;&2bs下;&2bs下; 上.5x=上50,&2bs下;&2bs下;&2bs下;&2bs下;&2bs下; 上.5x÷上.5=上50÷上.5,&2bs下;&2bs下;&2bs下;&2bs下;&2bs下;&2bs下;&2bs下;&2bs下;&2bs下;&2b...

(1)20%X=10,20%X÷20%=10÷20% x=50;(2)95%X-65%X=9, 30%x=9, 30%x÷30%=9÷30%, x=30;(3)50%X-30%X=5.5,20%x=5.5, 20%x÷20%=5.5÷20%, x=27.5;(4)X+350%X=90,450%x=90,450%x÷450%=9÷450%, x=2;(5)12X+4X=128, 16x=128, 1...

(1)(1-40%)X=42 0.6X=420.6X÷0.6=42÷0.6 X=70;(2)20%X-36=24 20%X-36+36=24+3620%X=60 20%X÷20%=60÷20% X=300;(3)75%X+5%X=16 0.8X=16 0.8X÷0.8=16÷0.8 X=20;(4)128÷16%X=4128÷16%X×16%X=4×16%X 16%X×4=128 16%X×4÷4=128÷4 16%X=3...

x=-195,y=-70 x=200,y=160 x=322/109,y=60/109 希望能帮到你!

(1)x-60%x=24040%x=240x=600 (2)x+20%x=24120%x=24x=20 (3)1-25%x= 75%x= x=3 (4)160%x-x=960%x=9x=15 (5)58%x-23%x=4235%x=42x=120 (6)40%x+70%x-x=1.810%x=1.8x=18

解答:(1)40%X+25%X=130 0.65X=130 0.65X÷0.65=130÷0.65 X=200(2)8X+42=178 8X+42-42=178-42 8X=136 8X÷8=136÷8 X=17(3)X+15X=240 1.2X=2401.2X÷1.2=240÷1.2 X=200(4)X-60%X=160 0.4X=160 0.4X÷0.4=160÷0.4 X=400(5)50%X-33%X=34 0.17...

(1)x-35%x=7.8 65%x=7.8 x=12 (2)x+160%x=39 260%x=39 x=15 (3)58%x-23%x=2.1 35%x=2.1 x=0.6 (4)80%x=72 x=90 (5)28%x+37%x=22.75 65%x=22.75 x=35 (6)x+40%x=8.4 140%x=8.4 x=6 (7) :x= x= (8)49:x= x=14 (9)x: = x= (...

(1)15%x+x=75. 9 1.15x=75.9 x=66 (2)43%x -18 %x=20 25%x=20 x= 80 (3)(x+350) ×70%= 420 x+350=600 x=250 (4)x+30%x-43=122× 1.3x=104 x= 80 (5) x ×x= × x= (6) =4:1.5 4x=3.6×1.5 x=1.35

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