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Babyblueeyes
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Rezolvati in multimea numerelor naturale ecuatiile: a.3*(x-2)+29=59. b.12*(x-5)+31=115

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Răspuns :

Erierika
a. 3*(x-2)+29=59
3*(x-2)=59-29
3*(x-2)=30
x-2=30*3
x-2=90
x=90+2
x=92

b. 12*(x-5)+31=115
12*(x-5)=115-31
12*(x-5)=84
x-5=84:12
x-5=7
x=7+5
x=12
a.3*(x-2)=59-29
3*(x-2)=30
x-2=30*3
x-2=90
x=90+2
x=90

b. 12*(x-5)+31=115
12*(x-5)=115-31
12*(x-5)=84
x-5=84:12
x-5=7
x=7+5
x=12 coroana