Question

afla valoarea lui a stiind ca: a+29=b, b:4=c, c×5=d d-30=15

Answer 1

d-30=15, d=15+30=45
cx5=45, c=45:5=9
b:4=9, b=9x4=36
a=36-29=7

Answer 2

a+29=b, b:4=c, c×5=d d-30=15. [tex]d=15+30\\ d=45\\\\ c*5=d\ \textless \ =\ \textgreater \ c*5=45\\ c=45:5\\ c=9\\\\ b:4=c\ \textless \ =\ \textgreater \ b:4=9\\ b=9*4\\ b=36.\\\\ a+29=b\ \textless \ =\ \textgreater \ a+29=36\\ a=36-29\\ a=7.[/tex]