Question

Please help I don’t get how to do it.

Answer 1

Explanation:

a) -2g

putting the value of g

-2
`((3)/(-1) )`

opening the brackets by multiplying

=
`((-6)/(1))`=-2g

b)f+3g

=
`(-2)/(4)+(9)/(-3)`

taking LCM AS 12

=
`(-2*3)/(4*3) +(9*4)/(-3*4)`

=-6/12-36/12

=-42/12

=-7/2

c)2f-4g

=
`2((-2)/(4))-4((3)/(-1) )`

=
`(-4)/(4)-(12)/(-1)`

=-1+12

=11