1) 8x+5*(2-3x)=4-6*(10x+3) 2) 3*(x-5)+x=4x-15 3) 2x+5=2*(x+6)

Question

1) 8x+5*(2-3x)=4-6*(10x+3) 2) 3*(x-5)+x=4x-15 3) 2x+5=2*(x+6)

Answer 1

1) 8x+5*(2-3x)=4-6*(10x+3)

8x+10-15x=4-60x-18

-7x+10=-14-60x

-7x+60x=-14-10

53x=-24

x=-24/53

2) 3*(x-5)+x=4x-15

3x-15+x=4x-15

3x+x=4x

4x=4x

x=нет корней

3) 2x+5=2*(x+6)

2x+5=2x+12

5=12

x=нет корней