问题
解答题
计算:(
|
答案
(
+1 243
+2 243
+…+3 243
)-(16 243
+1 486
+2 486
+…+3 486
)+322÷16116 486 161 242
=(
+1×2 243×2
+2×2 243×2
+…+2×3 243×2
)-(16×2 243×2
+1 486
+2 486
+…+3 486
)+322÷16116 486 161 242
=2×(
+1 486
+2 486
+…+3 486
)-(16 486
+1 486
+2 486
+…+3 486
)+322×16 486 242 161×243
=(
+1 486
+2 486
+…+3 486
)+16 486 484 243
=
+68 243 484 243
=
.552 243