问题
解答题
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答案
(1)x+50%x=6,
1.5x=6,
1.5x÷1.5=6÷1.5,
x=4;
(2)
:x=0.3:12,3 4
0.3x=
×12,3 4
0.3x÷0.3=9÷0.3,
x=30;
(3)4x+2(8-x)=26,
4x+16-2x=26,
2x+16=26,
2x+16-16=26-16,
2x÷2=10÷2,
x=5.
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(1)x+50%x=6,
1.5x=6,
1.5x÷1.5=6÷1.5,
x=4;
(2)
:x=0.3:12,3 4
0.3x=
×12,3 4
0.3x÷0.3=9÷0.3,
x=30;
(3)4x+2(8-x)=26,
4x+16-2x=26,
2x+16=26,
2x+16-16=26-16,
2x÷2=10÷2,
x=5.