Question

URGENT!! Imi da mereu gresit!

Answer 1

Răspuns:

a) $\frac{3x}{10} -\frac{x+1}{5} =\frac{x+3}{2}+\frac{2x+3}{5} -1\frac{1}{10}$

$\frac{3x}{10} -\frac{x+1}{5} =\frac{x+3}{2}+\frac{2x+3}{5} -\frac{11}{10}$ /·10

3x-2x-2=5x+15+4x+6-11

8x=-12 /:4  2x=-3 ⇒ $x=-\frac{3}{2}$

b) 5√2(x-√8)-2(x-5)=x(3√2-2)

5x√2-5√16-2x-10=3x√2-2x

5x√2-2x-3x√2+2x=20-10

2x√2=10 /:2

x√2=5 ⇒ $x=\frac{5}{\sqrt{2} }$   $x=\frac{5\sqrt{2} }{2}$

Explicație pas cu pas: