Question

Решить уравнения

3•5х+3+2•5х+1=77

Answer 1

15x+3+10x+1=77
25x=77-1-3
25x=74
x=74/25
x=2.96

Answer 2

$3*5x+3+2*5x+1=77\5*5x+4=77\5x=frac{77-4}{5}to x=frac{73}{25}=2,92$