问题
解答题
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答案
(1)x+35=79.4,
x+35-35=79.4-35,
x=44.4;
(2)x-12.8=16.2,
x-12.8+12.8=16.2+12.8,
x=29;
(3)5.7+x=7.5,
5.7+x-5.7=7.5-5.7,
x=1.8;
(4)x-4.8=6.2,
x-4.8+4.8=6.2+4.8,
x=11.
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(1)x+35=79.4,
x+35-35=79.4-35,
x=44.4;
(2)x-12.8=16.2,
x-12.8+12.8=16.2+12.8,
x=29;
(3)5.7+x=7.5,
5.7+x-5.7=7.5-5.7,
x=1.8;
(4)x-4.8=6.2,
x-4.8+4.8=6.2+4.8,
x=11.