Hi! does anyone mind explaining how to do these sort of questions please? Especially, number 1 till 6 one of them explained would be fine thank you!

I did a few of the 'tricky' ones should be the same

Step-by-step explanation:

1)

Taking -3x to R.H.S , the sign gets changed.

Dividing x on both the sides ,

2)

Taking 7x to R.H.S , the sign gets changed

Dividing x on both the sides ,

3)

Taking 2x as common from L.H.S ,

Dividing 2x on both the sides ,

4)

Taking -x to R.H.S , the sign gets changed.

Dividing x on both the sides ,

Dividing 3 on both the sides ,

5)

Taking -16 to R.H.S , the sign gets changed.

6)

Taking -49 to R.H.S , the sign gets changed.

on monday rodney ate 1/4th of the sandwich = 3/12

on tuesday he ate 1/3rd of the sandwich = 4/12

therefore in total he has eaten = 3/12 + 4/12 = 7/12

thus we can say that he has eaten 7/12 of the sandwich on monday and tuesday alltogether.

happy to

pls mark as brainliest.