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5×b+25×6-72:8= 181 . Ma ajuta cineva , va rog?

Răspuns :

5×b + 150-9=181
5b+141=181
5b= 181-141
5b= 40
b= 40÷5
b= 8
5b+150-9=181
5b+150=181+9
5b+150=190
5b=190-150
5b=40
b=8