解比例.
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(1)
14x=0.7×5, 14x÷14=3.5÷14, x=
(2)8:30=24:x, 8x=30×24, 8x÷8=720÷8, x=90; (3)
x=
(4)
40x=24×5, 40x÷40=120÷40, x=3; (5)6.5:x=3.25:4, 3.25x=6.5×4, 3.25x÷3.25=26÷3.25, x=8; (6)
x=
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(2)
=
(3)x:6=0.7:0.28(4)20:3=50:x
