Question

1третья = икс + 5 сельмых

Answer 1

1/3=х+5/7
х=1/3-5/7
х=7-15/21
х=-8/21

Answer 2

спс

Answer 3

1/3 = x + 5/7
x= 1/3 - 5/7
x= 7/21 - 15/21
x= (7-15)/21
x= - 8/21
/- это дробь

Answer 4

спс