2t+5t+3.18=25.3

Question

2t+5t+3.18=25.3

Answer 1

7t+54-75=0

7t=21

t= 3

Answer 2

7t=25,3-3,18

7t=22,12

t=22,12/7

t=3,16

проверяем, 2*3,16+5*3,16+3,18=25,3