Question

ex1) calculati a+b in cazul in care ax+bx=100 si x=25

ex2) calculati2a+3b+c in cazul in care a+b=17 si b+c=18

ex3)determinati toate nr naturale care impartite la 13 dau catul si restul egale

ex4)cate nr naturale de trei cifre impartite la 40 dau restul 17?

ex5) determinati nr abab, stiind ca abab =ab*(ab+a+b)

ex6determinati abcd,stiind ca 4*abcd=2*abcd+2112...... daca rezolvati bine atunci marchez ca e cel mai bun dar va rog ajutatima la exercitiile urmatoare plizzz....!

Answer 1

ex1) calculati a+b in cazul in care ax+bx=100 si x=25
ax+bx=100
x(a+b)=100
25x=100
x=100/25
x=4
ex2) calculati2a+3b+c in cazul in care a+b=17 si b+c=18
2a+3b+c=2a+2b+b+c=2(a+b)+b+c=2*17+18=52

Answer 2

1)x(a+b)=25(a+b)=100,a+b=4
2)a+a+b+b+b+c=17+17+18=34+18=52
3)x:13=2r,x=2rx13=26r
4)abc:40=c+17,abc=40c+17
6)2abcd=abcd+1056,abcd=1056
5)=abab+aba+abb=al2bla2+ala2b+abla2