Question

1. 7-2x=9-3x
2. 11x=6+5{2x-1}
3. 6{2x-3}-3x=2x-4
4. 4{3x+5}-5{4x-3}=3
5. 5x-3{4x-1]=7-2{7x+2}
6. -5,6{x-3]+2,1x=3,5x+10

Answer 1

Ответ:

1. 7-2x=9-3x. 2.11x=6+5(2x-1).

-2x+3x=9-7. 11x=6+10x-5

x=9-7. 11x-10x=1

x=2. x=1

3.6(2x-3)-3x=2x-4 4.4(3x+5)-5(4x-3)=3

12x-18-3x=2x-4. 12x+20-20x-15=3

9x-18=2x-4. -8x+35=3

7x=14. -8x=3-35

x=14:7. -8x=-32

x=2. x=4