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rezolvati ecuatiile: a) 17,5+x egal cu 22,5 b) 1,075-x egal cu 0,2 c) x-2,3 egal cu 4,51 d) x+14,121 egal cu 21,035

Răspuns :

CosmoteRo
17,5+x=22,5
x=22,5-17,5
x=5
b) 1,075-x=0,2
1,075-0,2=x
x=0,875
c) x-2,3=4,51
x=4,51+2,3
x=6,81
d) x+14,121=21,035
x=21,035-14,121
x=6,914
Iulia610
a)17.5-x=22.5
-x=22.5-17.5
-x=5|:-1
x=-5

b)1,075-x=0.2
-x=0.2-1,075
-x=-0.875|:-1
x=0.875

c)x-2,3 =4,51 
x=4,51+2,3
x=6,81

d)x+14,121=21,035
x=21,035-14,121
x=6.914

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