(1)6.2X-X=41.6, (6.2-1)X=41.6,5.2X=41.6, 5.2X÷5
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(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.
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