问题
解答题
解方程.
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答案
(1)8x+7×3=61,
8x+21-21=61-21,
8x÷8=40÷8,
x=5;
(2)2.5x+1.4x=5.85,
3.9x=5.85.
3.9x÷3.9=5.85÷3.9,
x=1.5.
解方程.
|
(1)8x+7×3=61,
8x+21-21=61-21,
8x÷8=40÷8,
x=5;
(2)2.5x+1.4x=5.85,
3.9x=5.85.
3.9x÷3.9=5.85÷3.9,
x=1.5.