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Nikitosandros
a fost răspuns

3+x=28:4 120:z=12 5(x+2)=32 8y+6=42-4 2a-3=17 20+3t=100:2 Ajutatima VA ROG

Răspuns :

Spidie
3+x=28:4
x=7-3
x=4

120:z=12
12z=120 |:12
z=10

5(x+2)=32
5x+10=32
5x=22
x=22/5


8y+6=42-4
8y=38-6
8y=32  |:8
y=4


2a-3=17
2a=17+3
2a=20  |:2
a=10


20+3t=100:2
3t=50-20
3t=30  |:3
t=10

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