( х – 3,48 ) + 2,15 = 3,9

Question

( х – 3,48 ) + 2,15 = 3,9

Answer 1

1) 3,9-2,15=1,75
2) х = 1,75+3,48=5,23

Answer 2

Х-3,48=3,9-2,15
х=1,75+3,48
х=5,23............................................