8÷ 2(2+2) = How much? What is this difficult problem that went viral?
Multiplication is also true for addition and subtraction. Think of a number.
13-5+3-2+2
When I was a child, I often hesitated when I saw such numbers. Since I knew the addition first, sometimes I added 5 and 3 or the last 2 and 2 first. Later, however, the teachers taught to do the yogas together first
13-5+3-2+2
= 13+3+2-5-2
= 18-7
= 11
It has the right answer, no doubt. But when the computer calculates it does not arrange it like this. Because the method is simpler. Since addition and subtraction have the same precedence, you simply count from left to right.
13-5+3-2+2
= 8+3-2+2
= 11-2+2
= 9+2
= 11
Requirements:
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