Question

1 solutia ecuatiei x-3 supra 3 +5 =x
2 a 1-3(-2x+5)=2(x-3)
b 41-23(-6x-15)=5(x+1)

Answer 1

1)x-3/3+5=x⇒x-3=x(3+5)⇒x-3=3x+5x⇒x-3=8x⇒x-8x=3⇒-7x=3⇒x=3/-7

2)a)1-3(-2x+5)=2(x-3)⇒1+6x-15=2x-6⇒-14+6x⇒2x-6⇒6x-2x=14-6⇒4x=8⇒x=8/4⇒x=2

b)41-23(-6x-15)=5(x+1)⇒41+138x+345=5x+5⇒138x+386=5x+5⇒138x-5x=-386+5⇒133x=-381⇒x=-381/133⇒x=-2.8
sucees