Question

a) Daca 3x + 3y = 21 , aflati 2 + y.

b) Calculati: 11 + 5 * { 45 * 4 * [ 3 + 8 * (12 * 13 - 8 * 14 ) - 37 ] } + 1234

Answer 1

a) 3x+3y=21
3(x+y)=21
x+y=7
y=7-x |+2
y+2=9-x

b)
11+5*{45*4*[3+8*(12*13-8*14)-37]}+1234=
=11+5*{45*4[3+8*(156-112)-37]}+1234
=11+5*[45*4(3+8*44-37)]+1234
=11+5*[45*4(3+352-37)]+1234
=11+5*(45*4*318)+1234
=11+5*(57240)+1234
=11+286200+1234
=287445