Question

find the value of x if 3x - 20 = 130?

find the value of x if 8x-2=-9+7x?


find the value of x if x + 6 = 33?

Answer 1

`3x-20=130\ \ \ /+20\\\\3x-20+20=130+20\\\\3x=150\ \ \ /:3\\\\3x:3=150:3\\\\x=50`




`8x-2=-9+7x\ \ \ /+2\ \ /-7x\\\\8x-7x=-9+2\\\\x=-7`




`x+6=33\ \ \ /-6\\\\x=33-6\\\\x=27`

Answer 2

1.

`3x-20=130`

`3x=130+20`

`3x=150`

`x=50`

2.

`8x-2=-9+7x`

`8x-7x=-9+2`

`x=-7`

3.

`x+6=33`

`x=33-6`

`x=27`

those tasks are very simple, you should try to solve them on you're own first :)