Question

Please help me ffftrrsse

Answer 1

ab=ba, 5(3x-2)=5.(3x)-5.(2)=15x-10,
`(1)/(2)(4-2x)=(1)/(2).4-(1)/(2).2x=2-x`, 32y+12y=44y, 12+3x-x-12 = 2x

Explanation:

In the given questions

3) ab is given it is which is written as

By Commutative property , ab=ba

4) 5(3x-2)

By distributive property,

5(3x-2)=5.(3x)-5.(2)=15x-10 (∵a(b+c)=a.b+a.c)

5)
`(1)/(2)(4-2x)`

By distributive property, (a(b+c)=a.b+a.c)

`(1)/(2)(4-2x)=(1)/(2).4-(1)/(2).2x=2-x`which is not equivalent to 2-2x

6)
`(1)/(2)(6x-2)`

By distributive property, (a(b+c)=a.b+a.c)

`(1)/(2)(6x-2)=(1)/(2).(6x)-(1)/(2).2=3x-1` which is not equivalent to 3-x

7) 32y+12y

32y+12y=(32+12)y (∵ distributive property)

= 44y

8) 12+3x-x-12

12+3x-x-12=12+(3-1)x-12 (∵ distributive property)

= 12+(2x-12)

= 12+(-12+2x) (∵ commutative property)

= (12-12)+2x (∵ associative property)

= 2x