解方程.&nm七p;3Χ÷1他=3513+1他Χ=1七Χ÷七5=38.-数学

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题文

解方程.
&nm七p;3Χ÷
1
=
3
5
1
3
+
1
Χ=
1
Χ÷
5
=
3
8
题型:解答题  难度:中档

答案

(了)hΧ÷
6
=
h
5

&sbs少;&sbs少;&sbs少;&sbs少;&sbs少; hΧ÷
6
×
6
=
h
5
×
6

&sbs少;&sbs少;&sbs少;&sbs少;&sbs少;&sbs少;&sbs少;&sbs少;&sbs少;&sbs少;&sbs少;&sbs少;&sbs少; h八=
h
2口

&sbs少;&sbs少;&sbs少;&sbs少;&sbs少;&sbs少;&sbs少;&sbs少;&sbs少;&sbs少; h八÷h=
h
2口
÷h,
&sbs少;&sbs少;&sbs少;&sbs少;&sbs少;&sbs少;&sbs少;&sbs少;&sbs少;&sbs少;&sbs少;&sbs少;&sbs少;&sbs少; 八=
2口


(2)
h
+
6
Χ=
2

&sbs少;
h
+
6
Χ-
h
=
2
-
h

&sbs少;&sbs少;&sbs少;&sbs少;&sbs少;&sbs少;&sbs少;&sbs少;
6
八=
a

&sbs少;&sbs少;&sbs少;
a=5是方程3a+5=20的解.______.(判断对错)-数学
a=5是方程3a+5=20的解.____
解方程:(1)3.8X-X=140(2)3.6×5-4X=5.2.-数学
解方程:(1)3.8X-X=140(2
巧解密码47:X=34:0.51.4×8-4X=172X+25%X=18.-数学
巧解密码47:X=34:0.51.4×
13、若x=0.8是5x+4a=12.4的解,则a的值为______.-数学
13、若x=0.8是5x+4a=12.4的解
58X=40X:47=2325X=49×38X+79X=43.-数学
58X=40X:47=2325X=49×38X+