Question

Tìm x biết 5(x-2)+3x(2-x)=0

Answer 1

5(x-2)+3x(2-x)=0

=>5(x-2)-3x(x-2)=0

=>(5-3x)(x-2)=0

=>5-3x=0 hoặc x-2=0

=>x=5/3;2

vậy x=5/3;2

Answer 2

5(x-2) + 3x(2-x) = 0

=> x - 2 = 2 - x = 0

=> x = 2