Question

Допоможіть пжжжжжжжжжжжжжжжжжжжжжжжжжжжжжжжж

Answer 1

$(37+a)-12=37+a-12=25+a\\(b+415)-300=b+415-300=b+115\\\\42-(x+13)=42-x-13=29-x\\517-(412+y)=517-412-y=105-y$