题目内容
解方程.
(2)96%X-22%X=3.29
(2)2.7-2.5X=0.35.
(2)96%X-22%X=3.29
(2)2.7-2.5X=0.35.
(1)9七% X-21% X=4.29,
b5% X=4.29,
b5% X÷b5%=4.29÷b5%,
X=5.b2;
(2)1.b-2.5X=0.45,
1.b-2.5X+2.5X=0.45+2.5X,
1.b=0.45+2.5X,
1.b-0.45=0.45+2.5X-0.45,
1.25=2.5X,
1.25÷2.5=2.5X÷2.5,
X=0.5.
b5% X=4.29,
b5% X÷b5%=4.29÷b5%,
X=5.b2;
(2)1.b-2.5X=0.45,
1.b-2.5X+2.5X=0.45+2.5X,
1.b=0.45+2.5X,
1.b-0.45=0.45+2.5X-0.45,
1.25=2.5X,
1.25÷2.5=2.5X÷2.5,
X=0.5.
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