Question

a) daca x-2=6, atunci x=
b) daca y+5=-7, atunci y=
c) daca -3x+7=18+7, atunci x=
d) daca x ∈ {-1, -2,0,1,2,3} si x-1 < -1, atunci x ∈ = {...}
e) daca x este numar intreg negativ si x - 2≥ - 7, atunci x ∈ = {...}

Answer 1

a.) x-2=6
×=2+6=8
b.) y+5=-7
y=-7-5
y=-13
c.) -3x+7=18+7
-3x=18+7-7
-3x=18
×=-6
d.) x€{-1,-2}
e.) x €{-5,-4,-3,-2,-1}
sper ca te-am ajutat!!!
p.s.in ce clasa esti???