Question

решите уравнение
5*0.9=3.5х+2.5

Answer 1

5*0,9=3,5х+2,5
-3,5х=2,5-4,5
-3,5х=-2
х=-2:(-3,5)
х=$frac{20}{35} = frac{4}{7}$

Answer 2

5*0.9=3.5х+2.5
4.5=3.5х+2.5
-3.5х=2.5-4.5
-3.5х=-2
х=1.75