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understood?

A. 2 negatives equal a positive so m plus 5=13 then subtract 5
m+8

m=8 sorry not plus

\[-5 + 5 = 0 0-13 = 13 so 13 +5 = 18 \S= 18\] C

So S = 18

thank u so much guys for help! i will give medals for sure!

And to d.\[so 9 + -4 is -4 - 0 so 4 then 9+4 = 13 \] So G=13

Hope that helps:)