Question

Rezolvati ecuatiile si comentati:
c) 8b+26=58;
d) 3(2+x)=9;
e) (15-x):3=5;
f) 42:(y+4)=6;

Answer 1

c)8b+26=58
8b=58-26
b=32:8=4
d)3(2+x)=9
2+x=9:3
x=3-2=1
e)(15-x):3=5
15-x=5•3
x=15-15=0
f)42:(y+4)=6
y+4=42:6
y=7-4=3

Answer 2

c) 8b=32
b=4
d)6+2x=9
2x=3
x=1.5
e)5-x:3=5
x:3=0
x=0
f)y:4=42:6
6y=42×4
y=7×4
y=28