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4razy(5-3+2)=4*(2+2)=4*4=16
60:3razy2=20*2=40
15:3+2razy(7-10)=5+2*(7-10)=5+2*(-3)=5+(-2*3)=5+(-6)=5-6= -1
4*4=16
20*2=40
15:3+2*(-3)=5+(-6)=(-1)