|
(1)1.5:12=6:x, 1.5x=12×6, 1.5x=72, 1.5x÷1.5=72÷1.5, x=48; (2)x:
2x=
2x=
2x÷2=
x=
(3)
1.3x=20×3.9, 1.3x=78, 1.3x÷1.3=78÷1.3, x=60; (4)x:
5x=
5x=3, 5x÷5=3÷5, x=0.6; (5)
x=
(6)
0.03x=0.15×0.4, 0.03x=0.06, 0.03x÷0.03=0.06÷0.03, x=2. |
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(2)
=
(3)x:6=0.7:0.28(4)20:3=50:x
