Question 404180

remember rules:

-*+ = - or +*- = -

-*-=+  and +*+ = +.....same for division


{{{3*(-7)*(-3)*3=-21*(-9)=189}}}


{{{-2*(-2.8)=5.6}}}


{{{-(a+59)= -a -59}}}


{{{-18/2= -9}}}


{{{17-3(-5)+7= 17 + 15 +7 = 39}}}