Question

Rezolvati ecuatiile:
a.)78,36:6,53+x=18,4
b.)7,9x+11,6=14,3x-5,9x

Answer 1

a)78,36:6,53+x=18
12+x=18
x=18-12
x=6 acesta este răspunsul corect

Answer 2

a)78,36:6,53+x=18,4
12+x=18,4
x=18,4-12
x=6,4
VERIFICARE:
78,36:6,53+6,4=18,4
12+6,4=18,4
18,4=18,4

b)7,9x+11,6=14,3x-5,9x
7,9x+11,6=8,4x
7,9x-8,4x= -11,6
-0,5x= -11,6
0,5x=11,6
x=11,6:0,5
x=23,2
VERIFICARE:
7,9*23,2+11,6=14,3*23,2-5,9*23,2
183,29+11,6=331,76-136,88
194,89=194,88