Question

15+15×[88-3×(42-225:15+a)-36:6]:5=18 si 13-3×{2-12:[10-8:(a+3)×2]}+7=20. vaaaaaaaaaaaaaaaaaa roooooooooooooooooooooog

Answer 1

a)15+15x[88-3x(42-225:15+a)-36:6]:5=18
    15x[88-3x(42-15+a)-6]:5=3
    15x[88-3x(27+a)-6]=15
     88-3x(27+a)-6=1
     3x(27+a)-6=87
     3x(27+a)=93
     27+a=31
     a=4
    
b)13-3x{2-12:[10-8:(a+3)x2]}+7=20
    20+3x{2-12:[10-8:(a+3)x2]} = 20
    3x{2-12:[10-8:(a+3)x2]}=0
    2-12:[10-8:(a+3)x2] = 0
    12:[10-8:(a+3)x2]=2
    10-8:(a+3)x2 = 6
    8:(a+3)x2 = 4
    (a+3)x2 = 2
    a+3 = 1
    a=1-3 = -2
    Eu am verificat inca o data si nu am gresit la calcule, mai verifica si tu daca toate datele sunt corect scrise la exercitiul 2