Question

решите уравнения: 2(х-3)=-7(1-х); 1-3(х-1)=2-7(1-х);

Answer 1

 2(х-3)=-7(1-х)

2x-6=-7+7x

-5x=-1

x=1/5

(х-1)=2-7(1-х)

x-1=2-7-7x

8x=-4

x=-4/8

x=-1/2

Answer 2

 

2x-6=-7+7x

7x-2x=-7+6

5x=-1

x=-0.2

___________________

1-3x+3=2-7+7x

1-2+7=7x+3x

6=10x

x=0.6