几道六年级解方程题目

来源:百度知道 编辑:UC知道 时间:2024/05/10 11:26:40
重要于过程,在2-3步左右
3∶8=15∶X 32.5∶X=6 1/2(六又二分之一) 10∶X=4 1/2
5/8∶X=1 6/19 X∶2.5=1/5 0.3/X=2 1/4 X∶0.15=1 1/3
1 2/3∶X=100 3/8∶X=0.5∶0.6 7∶4.2=(X+7)∶9
1/6X∶3/4=7∶1 2/5 4 1/2∶1 2/7=1 1/3∶(4-X)

各位,麻烦了~~
不用都做完
看谁做的多o(∩_∩)o...o(∩_∩)o...(*^__^*) 嘻嘻……
3∶8=15∶X o(∩_∩)o 32.5∶X=6 1/2(六又二分之一)o(∩_∩)o 10∶X=4 1/2 o(∩_∩)o5/8∶X=1 6/19 (一又十九分之六)o(∩_∩)o X∶2.5=1/5 o(∩_∩)o 0.3/X=2∶1/4 o(∩_∩)o X∶0.15=1 1/3o(∩_∩)o 1 2/3∶X=100o(∩_∩)o 3/8∶X=0.5∶0.6 o(∩_∩)o 7∶4.2=(X+7)∶9 o(∩_∩)o 1/6X∶3/4=7∶1 2/5 o(∩_∩)o 4 1/2∶1 2/7=1 1/3∶(4-X)

上面的可能不清楚

3∶8=15∶X
3x = 8 × 15
3x = 120
x = 40

32.5∶X=6又1/2(六又二分之一)
x = 32.5 ÷ 6又1/2
x = 5

10∶X=4又1/2
x = 10 ÷ 4又1/2
x = 2.222……

5/8∶X=1又6/19
x = 5/8 ÷ 1又6/19
x = 19/40

X∶2.5=1/5
x = 2.5 × 1.5
x = 3.75

0.3/X=2又1/4
x = 0.3 ÷ 2又1/4
x = 0.1333……

X∶0.15=1又1/3
x = 0.15 × 1又1/3
x = 1/5

1又2/3∶X=100
x = 1又2/3 ÷ 100
x = 1/60

3/8∶X=0.5∶0.6
3/8 × 0.6 = 0.5x
x = 0.45

7∶4.2=(X+7)∶9
7 × 9 = 4.2 ( x + 7 )
63 = 4.2x + 29.4
33.6 = 4.2x
x = 8

1/6X∶3/4=7∶1又2/5
1/6x × 1又2/5 = 3.4 × 7
1/6x × 1又2/5 = 23.8
1/6x = 17
x = 102

4又1/2∶1又2/7=1又1/3∶(4-X)
4又1/2 ×(4-x)= 1又2/7 × 1又1/3
4又1/2 ×(4-x)= 12/7
4-x = 7又5/7
x = -3又5/7

sorry啊,这有点很难看懂

ha