Question

Równania oblicz

4a=7

25/b=6

b/4=5½

3a+1¾= 2¹₅

1⅔ -5c=1¼

½p/1¾=8

2a-1=17

Answer 1

1) 4a=7 //4

a=7/4

a= 1 3/4

2)25/b=6 /*b

25=6b //6

b=25/6

b=4 1/6

3)b/4=5 1/2

 b/4=11/2 /*4

b=11/2*4

b=22

4)3a+1 3/4= 2 1/5

3a=11/5 -7/4 

3a=44/20-35/20

3a=9/20 //3

a=3/20

5)1 2/3-5c=1 1/4

-5c=5/4-5/3

-5c=15/12-20/12

-5c=-5/12 //(-5)

c=1/12

6)1/2p /1 3/4=8

1/2p /7/4=8

1/2p* 4/7=8

2/7p=8 //2/7

p= 8: 2/7

p=8* 7/2

p=28

7)2a-1=17

2a=17+1

2a=18 //2

a =9

Answer 2

4a=7/:4

a=1,75

 

25/b=6/*b

25=6b/:6

b=4i1/6

 

b/4=5½/*4

b=22

 

2a-1=17/+1

2a=18/:2

a=9