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受欢迎的初等代数 >

20+13-12+11-10+7× 5-12\div 3× 2

解答

20 + 13 - 12 + 11 - 10 + 7 \times 5 - 12 \div 3 \times 2

解答

49

求解步骤

20 + 13 - 12 + 11 - 10 + 7 \times 5 - 12 \div 3 \times 2

遵循 PEMDAS 运算顺序

乘除（左右）

7 \times 5 : 35

7 \times 5

7 \times 5 = 35

= 35

= 20 + 13 - 12 + 11 - 10 + 35 - 12 \div 3 \times 2

乘除（左右）

12 \div 3 \times 2 : 8

12 \div 3 \times 2

12 \div 3 = 4

= 4 \times 2

4 \times 2 = 8

= 8

= 20 + 13 - 12 + 11 - 10 + 35 - 8

加减（左右）

20 + 13 - 12 + 11 - 10 + 35 - 8 : 49

20 + 13 - 12 + 11 - 10 + 35 - 8

20 + 13 = 33

= 33 - 12 + 11 - 10 + 35 - 8

33 - 12 = 21

= 21 + 11 - 10 + 35 - 8

21 + 11 = 32

= 32 - 10 + 35 - 8

32 - 10 = 22

= 22 + 35 - 8

22 + 35 = 57

= 57 - 8

57 - 8 = 49

= 49

= 49

流行的例子

4 + (2 \times 3)^{2}

[4+8× (5-3)]\div 5+6

[4 + 8 \times (5 - 3)] \div 5 + 6

(7 + 6) \times (4 - 3)

2^9+2^8+2^7+2^6

2^{9} + 2^{8} + 2^{7} + 2^{6}

72\div (-18)× 4-(3-12)\div (-9)

72 \div (- 18) \times 4 - (3 - 12) \div (- 9)