Question

știu că mă puteți ajuta la teme .

Answer 1

1.
a) x+2=6 => x=6-2 => x=4
b) il ai rezolvat
c)7-x=4,35 => -x=4,35-7 => -x=-2,65 => x=2,65
d)x-4,32=2,8=> x=2,8+4,32 => x=7,12
e)x+14,35=12,4·3 => x+14,35=37,2 =>x=37,2-14,35 =>x=22,85
f)4,21·5+x=40,85 =>21,05+x=40,85 => x=40,85-21,05 => x=19,8
g)2x=14 =>x=14/2 =>x=7
h)3x=15,45 => x=15,45/3 =>x=5,15
i)10x=25 => x=25/10=> x=2,5
j)x/10=4,29 => x=4,29·10 => x=42,9
k)x/4=29,91x=29,91·4=> x=119,74
l)32/x=0,08 => x=31=0,08x=> 0,08x=32 => x= 32/0,08 => x=400

2. a)x+2,762=3 =>x=3-2,762 =>x=0,328
b)9,3-x=7,193. > -x=7,193-9,3 => -x=-2,107
=> x=2,107
c)x-28,43=0,147 => x=0,147+28,43=> x=28,577
d)x·0,8=5,6 => x=5,6/0,8 => x=7
e)1,2·x=0,144 => x=0,144/1,2 => x=0,12
f)x/2,3=0,13 => x=0,13·2,3 =>x=0,299
g)6,25/x=2,5 => 6,25=2,5x=> 2,5x=6,25 => x=6,25/2,5 =>x=2,5
h)3x+2,32=x+11,8 =>3x-x=11,8-2,32 => 2x=9,48 => x=9,48/2 => x=4,74
i) 2x-21,135=x-18,68 => 2x-x=-18,68+21,135 => x=2,455
j)4,8-3x=0,3 => -3x=0,3-4,8 => -3x=-4,5 => x=-4,5/-3 =>x=1,5
k) x·13,27=15,924 =>x=15,924/13,27 =>x=1,2
l)x/12,3=0,04=>x=0,04·12,3 =>x=492