Question

甲乙丙丁四个数的和等于32,甲加上17,乙减去11,丙加上23,丁减去15,得到四个新数,那么这四个新数的和是多少?

Answer 1

(a+17)+(b-11)+(c+23)+(d-15)=a+b+c+d+17-11+23-15=32+17-11+23-15=46