Question

7x-4(2x+3) = 2(4x-3)+3(2x-x) Urgent! Dau 30 de puncte!

Answer 1

Răspuns:

x = -1/2

Explicație pas cu pas:

7x-4(2x+3) = 2(4x-3)+3(2x-x)  <=>

7x-8x-12 = 8x-6+6x-3x  <=>

-x-12 = 11x-6  => 11x+x = -12+6 <=> 12x = -6 =>

x = -6/12  => x = -1/2

Answer 2

$\it 7x-8x-12=8x-6+3x \Leftrightarrow -x-12=11x-6 \Leftrightarrow -12+6=11x+x \Leftrightarrow \\ \\ \Leftrightarrow -6=12x \Leftrightarrow 12x=-6 \Leftrightarrow x=\dfrac{-6^{(6}}{12} \Leftrightarrow x=-\dfrac{1}{2}$