问题
解答题
解方程:
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答案
(1)x-56=56,
x-56+56=56+56,
x=112;
(2)8x=4,
8x÷8=4÷8,
x=0.5;
(3)x÷12.5=8,
x÷12.5×12.5=8×12.5,
x=100;
(4)12.7+x=15.7,
12.7+x-12.7=15.7-12.7,
x=3.
解方程:
|
(1)x-56=56,
x-56+56=56+56,
x=112;
(2)8x=4,
8x÷8=4÷8,
x=0.5;
(3)x÷12.5=8,
x÷12.5×12.5=8×12.5,
x=100;
(4)12.7+x=15.7,
12.7+x-12.7=15.7-12.7,
x=3.