Question

testul 7ex:1,2.VA ROG AJUTATIMA

Answer 1

1.
a) x=19-7 => x=12
b) x=17-5 => x=12
c) x=37-19 => x=18
d) x=27+6 => x=33
e) x=39:2 => x=19,5
f) x=102•9 => x=918
g) x=58:29 => x=2
h) x=108:6 => x=18
i) 2x=107-1 => 2x=106 => x=106:2 => x=53

2.
a) 3x-x=25-5 => 2x=20 => x=20:2 => x=10
b) 27-17=3x-x => 10=2x => x=10:2 => x=5