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Coronita si pct.
Rezolvatii ecuatiile
a) 0.2x-1.25=7.5
b)1.2x+3.6=9.6


Răspuns :

a) 0.2x-1.25=7.5/+1.25
   0.2x=8.75/:0.2
   x=43.75
b) 1.2x+3.6=9.6/-6.9
    1.2x=2.7/:1.2
    x=2.25
a) 0,2x - 1,25 = 7,5
0,2x = 7,5 + 1,25
0,2x = 8,75
x = 8,75 : 0,2 
x = 43,75

b) 1,2x + 3,6 = 9,6
1,2x = 9,6 - 3,6 
1,2x = 6
x = 6 : 1,2 
x = 5