a)9m-2(m-3)+7(2-m)=9m-2m+6+14-7m=20
б)5a-8(a-3)+(a+5)*4=5a-8a+24+4a+20=1a+44
г)12(а+4)-3(4a+1)-45(a-4)
+45a=12a+48-12a-3-45a+180=-45a+225
д)-8(-2m+4)-6(3m-5)-12(-2m+6)=16m-32-18m+30+24m-72=26m-74
a)9m-2(m-3)+7(2-m)=9m-2m+6+14-7m=20
б)5a-8(a-3)+(a+5)*4=5a-8a+24+4a+20=1a+44
г)12(а+4)-3(4a+1)-45(a-4)
+45a=12a+48-12a-3-45a+180=-45a+225
д)-8(-2m+4)-6(3m-5)-12(-2m+6)=16m-32-18m+30+24m-72=26m-74