Question

Va rog repede ofer 20 puncte și coroana repede ​

Answer 1

$\it a)\ \ 2x=-10|_{:2} \Rightarrow x=-5\\ \\ b)\ \ x+8\geq0 \Rightarrow x\geq-8 \Rightarrow x\in\{-8,\ -7,\ -6,\ ...\}\\ \\ \\ |3\cdot8-4\cdot7|=|24-28|=|-4|=4$

Answer 2

Răspuns:

a) 4-(8-10) = 4-(-2) = 6

2x=-10. => x=-5

|3*8-4*7|= |24-28|= 4

-7-2*(-3)= -7+6= -1

x aparține -8,-7,-6,-5,-4,-3,-2......