Baladavid840ask
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Rezolvati ecuatiile in Z : 6+3x=-54+X ; 2x+3=X+53 ; -X+7=2x-22 ; (X-5)=1 ; (X-3)=1 ; (2x+1)=5 .​

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Mirena30ask

Răspuns:

a) 6+3×=-54+×

3x-x=-54-6,2x=-60,x=-30

b) 2x+3=x+53, 2x-x=53-3, x=50

c) -x+7=2x-22,-x-2x=-22-7, -3x=-29, x=-29/-3

d) x-5=1, x=6

e) x-3=1, x=4

f)2x+1=5,2x=4, x=2

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