Dau coroanā PROMIT!!!!!
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Răspuns:
a=6*5-5*5=30-25=5
b=(1*2+3)*4:5+6=5*4:5+6=20:5+6=4+6=10
2*a=b <=> 2*5=10
a=6×5-5×5
a=30-25
a=5
b=(1×2+3)×4:5+6
b=(2+3)×4:5+6
b=5×4:5+6
b=20:5+6
b=4+6
b=10