Răspuns:
a) x-5=0
x=5
b) x+4=11
x=11-4
x=7
c) x-6=+4
x=4+6
x=10
d) 8-x=1
x=1-8
x=-7
e) 7-x=-2
x=-2-7
x=-9
f) 4-x=5
x=5-4
x=1
g)x-2³=2
x= 2+8
h)x-5=-2•3
x=-2•3+5
x=-6+5
x=-1
i) 2⁴-x=-3
x=-3+2⁴
x=-3+16
x=13
