Question

FIE NUMERELE a,b si c...........DACA.a=9*7-2*4-5*10 b=98-(7*7+3+5*3) c=(13+7*4)-39. CALCULEAZAa)3*a+3*c-b= b)b+4*a-2*c= c)(a+c)*9-b=

Answer 1

a=9·7-2·4-5·10
a=63-8-50
a=55-50
a=5

b=98-(7·7+3+5·3)
b=98-(49+3+15)
b=98-67
b=31

c=(13+7·4)-39
c=(13+28)-39
c=41-39
c=2

a) 3a+3c-b=3·5+3·2-31=15+6-31=21-31=-10
b) b+4a-2c=31+4·5-2·2=31+20-4=51-4=47
c) (a+c)·9-b=(5+2)·9-31=7·9-31=63-31=32

Sper ca te-am ajutat :)