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76%x一21%x=110,怎么解?

(1)76%x-21%x=110 0.55x=110 0.55x÷0.55=110÷0.55 x=200;(2)1.2x+50=137 1.2x+50-50=137-50 1.2x=87 1.2x÷1.2=87÷1.2 x=72.5;(3)x÷45%=100 x÷45%*45%=100*45% x=45;(4)150%x-1 4 x=25 1.25x=25 1.25x÷1.25=25÷1.25 x=20;(5)9.1-14%x=0

0.76x-0.21=1100.76x=110.21x=11021/76

(1)76%x-21%x=110, (76%-21%)x=110, 0.55x=110, 0.55x÷0.55=110÷0.55, x=200;(2)(1-75%)X=1, 0.25X=1, 0.25X÷0.25=1÷0.25, X=4;(3)150%x-140%x=25, (150%-140%)x=

55%x=1100.55x=11055x=11000x=200

①75%X=120,0.75X=120,0.75X÷0.75=120÷0.75, X=160;②X+18%X=118,(1+18%)X=118, 1.18X=118,1.18X÷1.18=118÷1.18, X=100;③76%X-21%X=110,(76%-21%)X=110,0.55X=110,0.55X÷0.55=110÷0.55, X=200.

(1)80%x=160 80%x÷80%=160÷80% x=200;(2)76%x-21%x=110 (76%-21%)x=110 55%x=110 55%x÷55%=110÷55% x=200;(3)x+120%x=33 (1+120%)x=33 220%x=33 220%x÷220%=33÷220% x=15.

76%*-21%*=110 55%x=110x=110÷55/100=110x100/55=2001.2*+50=1371.2x=137-501.2x=87 x=87/1.2=72.5150%-4分之1*=251.5x-0.25x=251.25x=25x=20 9.1-14%*=0.714%x=9.1-0.714%x=8.4x=8.4÷14x=0.6

(1)X+40%X=42, 1.4X=42, 1.4X÷1.4=42÷1.4, X=30;(2)120%X-X=24, 0.2X=24, 0.2X÷0.2=24÷0.2, X=120;(3)80%X=120,80%X÷80%=120÷80%, X=150;(4)76%X-21%X=110, 0.55X=110, 0.55X÷0.55=110÷0.55, X=200.

(1)76%x-21%x=110 0.55x=110 0.55x÷0.55=110÷0.55

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