Question

Rezolvati in Z ecuatiile d) 11 ( x -4) =-88 f) 3(-x +4) = -9 g ) 3( x -2 - 4 ( 2x + 5) = -13 x +1​

Answer 1

d) x-4= -88/11

x-4 = -8

x = -8+4

x= -4

f) -x+4= -9/3

-x+4 = -3

-x = -3-4

-x = -7

x= 7

g) nu ai incheiat paranteza de la 3(.. dar banuiesc ca este asa 3(x-2-4(2x+5))= -13x+1

3(x-2-8x-20)= -13x+1

3x-66-24x = -13x+1

-21x-66= -13x+1

-21x+13x = 1+66

-8x = 67

x= -67/8