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Cum se face ex [(a+10)•3-7]:5-100=300

Răspuns :

Răspuns:

[...]:5=300+100=400

[...]=5×400=2000

(...)×3=2000+7=2007

(...)=2007:3=669

a=669-10=659

a=659

R:659

[(a+10)x3-7]:5=400
(a+10)x3-7=2000
(a+10)x3=2007
a+10=669
a=659