Question

rozwiąż równanie 2(5x-1)=8

0.5(4y+6)=3

-3(x-2)=-9

Answer 1

2(5x-1)=8

10x-2=8

10x=8+2=10   /:10

x=1

 

 0.5(4y+6)=3

2y+3=3

2y=3-3   /:2

y=0

 

 -3(x-2)=-9

-3x+6=-9

-3x=-9-6

-3x=-15    /:(-3)

x=5