Question

Równania

a) 41x+2=-2-13x

b) 2x+5=3y

x=2y-1

Answer 1

a) 41x+2=-2-13x                                         

     41x+13x=-2-2

     54x=-4

     x=4\54=-1\13

 

 

b) 2x+5=3y                                         4y-2+5=3y                                     y=-3

     x=2y-1                                             x=2y-1                                           x=2*3-1

 

    2*(2y-1)+5=3y                                4y-3y=2-5                                     y=-3

    x=2y-1                                               x=2y-1                                          x=5