问题
解答题
6.2X-X=41.62X+1.3×4=6.819.5÷3X=2.
答案
(1)6.2X-X=41.6,
(6.2-1)X=41.6,
5.2X=41.6,
5.2X÷5.2=41.6÷5.2,
X=8;
(2)2X+1.3×4=6.8,
2X+5.2=6.8,
2X+5.2-5.2=6.8-5.2,
2X=1.6,
2X÷2=1.6÷2,
X=0.8;
(3)19.5÷3X=2,
19.5÷3X×3X=2×3X,
19.5=6X,
6X÷6=19.5÷6,
X=3.25.