Question

Rezolvați in multimea Q plus urmatoarele ex
A) x+5=18,6
B) 21+x=65,4
C) 4,5+x=32,5
D) 9,1+x=99,4
E) x-8=14,2
F) x-12=12,6
Ajutati-ma pls

Answer 1

A) x+5=18,6
$x= \frac{186}{10} -5= \frac{186-5*2}{10} = \frac{176}{10}$
B) 21+x=65,4
$x= \frac{654}{10} - 21 = \frac{654-21*10}{10} = \frac{444}{10}$
C) 4,5+x=32,5
$x= \frac{325}{10} - \frac{45}{10} = \frac{280}{10}$
D) 9,1+x=99,4
$x= \frac{994}{10} - \frac{91}{10} = \frac{903}{10}$
E) x-8=14,2
$x= \frac{142}{10} +8= \frac{142+8*10}{10} = \frac{222}{10}$
F) x-12=12,6
$x= \frac{126}{10} +12= \frac{126+12*10}{10} = \frac{246}{10}$