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(324:6+345:5)×2+1237=43×a+1354

Răspuns :

(324:6+345:5)×2+1237=43×a+1354 (54+69)×2+1237=43×a+1354 123×2+1237=43×a+1354 246+1237=43×a+1354 1483=43×a+1354 -43×a=1354-1483 -43×a=-129/×(-1) 43×a=129 a=129:43 a=3