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Cum se rezolva x+50-12+150+178=1200

Răspuns :

se rezolva asa
x+50-12+150=1200-178=1022
x+50-12=1022-150=872
x+50=872+12=884
x=884-50
x=834
×+50-12+150=1200-178
×+50-12=1022-150
×+50=872+12
×=884-50
×=834