问题 解答题
解方程或解比例.
2x-5.35=65%
1
4
x+
2
3
x=121
(x+
6
7
)×7=8.1
x
3.6
=
5
1.2
答案

(1)2x-5.35=65%,

2x-5.35+5.35=0.65+5.35,

2x÷2=6÷2,

x=3;

(2)

1
4
x+
2
3
x=121,

11
12
x=121,

11
12
12
11
=121×
12
11

x=132;

(3)(x+

6
7
)×7=8.1,

7x+6=8.1,

7x+6-6=8.1-6,

7x÷7=2.1÷7,

x=0.3;

(4)

x
3.6
=
5
1.2

x
3.6
×3.6=
5
1.2
×3.6,

x=15.

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