Question

Vreau ras.urgent.cat face c+c=12 si 15+c=30.multumesc

Answer 1

c+c=12
2xc=12
c=12:2
c=6
V: 6+6=12

15+c=30
c=30-15
c=15
V: 15+15=30

Answer 2

$c + c = 12 \\ 2 \times c = 12 \\ c = 12 \div 2 = 6$
$15 + c = 30 \\ c = 30 - 15 = 15$