Question

Rezolvati in Z ecuatiile:

a) 2x+4= - 10
b)10= 7x - 4
c) 6= 4x - 2
d) - 7= 4x+ 1

Cine ma ajuta primeste 55 de puncte !!!
Va rog !!!

Answer 1

      
$a) \\ 2x+4=-10 \\ 2x=-10-4 \\ 2x=-14 \\ x= \frac{-14}{2} =\boxed{-7} \\ \\ b) \\ 10=7x-4 \\ 7x=10+4 \\ 7x=14 \\ x= \frac{14}{7} =\boxed{2}$

$c) \\ 6=4x-2 \\ 4x=6+2 \\ 4x=8 \\ x= \frac{8}{4} =\boxed{2} \\ \\ d) \\ -7=4x+1 \\ 4x=-7-1 \\ 4x=-8 \\ x= \frac{-8}{4} =\boxed{-2}$