Question

математика пжппжжжпп
$\frac{3x + 1}{5} - \frac{2x - 1}{3} = \frac{7x + 3}{15}$​

Answer 1

3(3x+1)-5(2x-1)=7x+3
9x+3-10x+5=7x+3
9x-10x+5=7x
-x+5=7x
-x-7x=-5
-8x=-5
x=5/8(дріб)

Answer 2

(3x+1)/5-(2x-1) /3=(7x+3) /15
(3x+1)/5*15-(2x-1) /3*15=(7x+3) /15*15
9x+3-10x+5=7x+3
7x-9x+10x=3+5-3
8x=5
x=0.625