问题
解答题
解方程:
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答案
(1)X÷3.6=3.5,
X÷3.6×2.6=3.5×2.6,
X=9.1;
(2)5(X+4)=80,
5(X+4)÷5=80÷5,
X+4=16,
X+4-4=16-4,
X=12;
(3)6X-8=X,
6X-8-X=X-X,
5X-8=0,
5X-8+8=0+8,
5X=8;
5X÷5=8÷5;
X=1.6.
解方程:
|
(1)X÷3.6=3.5,
X÷3.6×2.6=3.5×2.6,
X=9.1;
(2)5(X+4)=80,
5(X+4)÷5=80÷5,
X+4=16,
X+4-4=16-4,
X=12;
(3)6X-8=X,
6X-8-X=X-X,
5X-8=0,
5X-8+8=0+8,
5X=8;
5X÷5=8÷5;
X=1.6.