Question

fie x natural .rezolvați acuzațiile:
a)3³-x=12 , b)2×(x+4)=36 ,
c)(3x-5)+3¹=4. ,d)3³+6(x-2)=69
, e)(1+3²)+(x-2³)=12
vă roggg!!!!!
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Answer 1

Răspuns:

Salut!!!

Explicație pas cu pas:

a)3³-x=12=>27-x=12=>-x=12-27=>-x=-15/×(-1)=>x=15

b)2×(x+4)=36=>2x+8=36=>2x=36-8=28=>x=28÷2=14=>x=14

c)(3x-5)+3¹=4=>3x-5+3=4=>3x=4-3+5=1+5=6=>3x=6=>x=6÷3=2=>x=2

d)3³+6(x-2)=69=>27+6x-12=69=>6x=69+12-27=>6x=69+(-15)=69-15=54=>x=54÷6=9=>x=9

e)(1+3²)+(x-2³)=12=>1+9+x-8=12=>10+x-8=12=>2+x=12=>x=12-2=10=>x=10

Baftă!!!!