Question

1) Calculați produsul nr a si b stiind ca.:a=700-(19+195+78)×2; b=a×4-(136×3+49).2) Calculați a×c-a×b stiind ca :a=(3×29+2×196+97×4)-698; b=[109×4-(a+246)]÷7; c=(800-247×b)×6-349.va rog frumos.

Answer 1

a=700-292·2=700-584
a=116
b=116·4-(408+49)=464-457=7
b=7
a·b=116·7=812
partea a doua:
a=(87+392+388)-698
= 867-698=169
a=169
b=[109·4-(169+246)]:7=
(436-415):7=21:7=3
b=3
c=(800-247·3)·6-349
=(800-741)·6-349
=59·6-349
= 354-349=5
c=5
a·c-a·b= 169·5-169·3
=845-507
= 338