Помогите решить премеры: 0.2b-3b+0.08b; -0.4y+2y+2/5y; 0.83y+0.56y-0.92y-0.83y; 8x-5y-7y; 1.5x+2y-3x-y; -0.24+1.1/4n+0.12+1.25n; (-0.3x+2)-(5-0.2x); 1/5y-(3y-4/5)+4
1)-2.72b 2)2y 3)0.38y 4)-4 5)-1.5x+y