Question

rezolvati in multimea z ecuatiile
a) x+7=3
b) 6-x=15
c) -2-x=-5 dau coroana

Answer 1

x+7=3
x=3-7
x=-4
6-x=15
x=6-15
x=-9
-2-x=-5|x(-1)
2+x=5
x=5-2
x=3