Question

2•{12+3•[60-3•(27-4•3)]}-5x=7

Answer 1

x=y(nu stiu cum sa  pun altfel)
2x{12+3x[60-3x(27-12)]}-5y=7
2x[12+3x(60-45)]-5y=7
2x(12+3x15)-5y=7
2x57-5y=7
114-5y=7
5y=7-114
y=-21.4
cred ca mi-a dat corect ;daca nu imi pare rau!!!