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a)x÷(-8)=-20
b)y÷38=10
c)z÷(-19)=-18
d)3x+72=0
e)-8y+800=0
f)22z+440=0
AJUTAMA TE ROG SI ITI DAU 20 PCTE


Răspuns :

A)x÷(-8)=-20
x=(-20)x(-8)=160

b)y÷38=10
y=10x38=380

c)z÷(-19)=-18
z=(-18)x(-19)=342

d)3x+72=0
3x=-72
x=-72:3
x=-24

e)-8y+800=0
-8y=-800
y=(-800):(-8)
y=100

f)22z+440=0
22z=-440
z=-440:22
z=-20
A)x=2.5
B) Y=380

c)z÷(-19)=-18  z=342
d)3x+72=0    x=-24
e)-8y+800=0   Y=100
f)22z+440=0  z=-20