-28:7+8*(-9)+63=(-66+58-13):7*(-10)=

Question

-28:7+8*(-9)+63=
(-66+58-13):7*(-10)=

Answer 1

-28:7+8*(-9)+63=-4-72+63=-76+63=-13
(-66+58-13):7*(-10)=(-79+57):7*(-10)=
= -21:7*(-10)=30