来自李志涛的问题
19x-8x=552×(7x-4x)=186x+8x=1.4×35x+0.1x=50+6.17.2x-3.6x=9×0.420=5x-3X.
19x-8x=552×(7x-4x)=186x+8x=1.4×35x+0.1x=50+6.17.2x-3.6x=9×0.420=5x-3X.
1回答
2020-05-17 01:42
19x-8x=552×(7x-4x)=186x+8x=1.4×35x+0.1x=50+6.17.2x-3.6x=9×0.420=5x-3X.
19x-8x=552×(7x-4x)=186x+8x=1.4×35x+0.1x=50+6.17.2x-3.6x=9×0.420=5x-3X.
(1)19x-8x=55, 11x=55, 11x÷11=55÷11, &n...