Помогите пожалуйста. Заранее спасибо.
1)(1/3+1/2)×x=3.75 5/6×x=3.75 x=3.75:5/6 x=375/100:5/6 x=15/4×6/5 x=3/4×6 x=3/2×3 x=9/2 x=4.5 2)(3/5-0.25)×x=4.9 (3/5-25/100)×x=4.9 (3/5-1/4)×x=4.9 12-5/20×x=4.9 7/20×x=4.9 x=4.9÷7/20 x=7×20 x=140