1.WHAT IS 18 MULTIPLIED BY[-7/6] 2.WHAT IS 8 MULTIPLIED BY [-4/5] AND MULTIPLIED BY -10 3. WHAT IS [-2/3x] MULTIPLIED BY 15

1.  18 multiplied by -7/6 is -21 2.  8 multiplied by -4/5 multiplied by -10 is the same as -80 multiplied by -4/5 which is 64 3.   15 multiplied by -2/3x is -10/x  this can all be done without a calculator. I didnt use one and im sure my answers are correct but you could always check with one just in case :)