Question

Please help me, evaluate the expressions below if (a=8), (b=-2) and (c=-9).

Answer 1

`-(3)/(2)`

Explanation:

`-(7)/(6)c+(3)/(4)ab`

`-(7)/(6)(-9)+(3)/(4)(8)(-2)`

`(-7*-9)/(6)+(3*8*-2)/(4)`

`(63)/(6)+(-48)/(4)`

`(21)/(2)-(24)/(2)`

`(21-24)/(2)`

`-(3)/(2)`