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a fost răspuns

rezolvati ecuatia: a)3*(x+2)=66 b)5*(x-3)=75 c)6*(2x+1)=78 d)7*(3x-2)=70 e)2*(x+5)-7=19 f)3x+4x=28 g)4*(3x+2)+15=71 h)5*(2x-3)-18=87

Răspuns :

a) x+2=22 -> x=20
b) x-3=15 -> x=18
c) 2x+1=13 -> 2x=12 -> x=6
d) 3x-2=10 -> 3x=12 -> x=4
e) 2*(x+5)=26 -> x+5=13 -> x=8
f) 7x=28 -> x=4
g) 4*(3x+2)=56 -> 3x+2=14 -> 3x=12 -> x=4
h) 5*(2x-3)=105 -> 2x-3=21 -> 2x=24 -> x=12

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