Question

plz 3, 4 repedeeeeeeeeeee dau coroana! !!!!!!!!

Answer 1

3) 4 inele...... 12g
8 inele......... Xg

4x=12x8
4x=96
X=96:4
X=24 g

Sau 12g+12g=24g


4)
x+y=700
Y+z=500
X+z=800


X+y=700
Y+z=500/ x(-1).

X+y-y-z=700-500
X-z=200

X-z=200
X+z=800

X-z+x+z=200+800
2x=1000
X=1000:2
X=500



X+y=700
500+y=700
Y=700-500
Y=200


X+z=800
500+z=800
Z=800-500
Z=300

Raspuns :x=500,y=200,z=300

Answer 2

Y=500-z
Z=800-×
Y=500-800 +×
X-300+×=700
×=1000/2=500
Y=200
Z=300