Two times a is the difference between B and 3

Two times a is the difference between B and 3

2 times of a is equal to the difference between B and 3
2a=b-3
2a+3=b
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The power of a minus 7a + 10 equals zero

a²-7a+10=0
（a-5）（a-2）=0
a1=5 a2=2
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How to make the number 1 ~ 12 equal to 0 through addition and subtraction

1+12-2-11+3+10-4-9+5+8-6-7=0 12-8-4+11-9-2+10-7-3+6-5-1=0 12-11+10-9+8-7+6-5+3-4-2-1=0 12+11+10-9-8-7-6-5+4-3+2-1=0

The expression of NOR gate in digital circuit is y = a + B, please draw its logic symbol and truth table
In digital circuit, the expression of NOR gate is y = a + B, please draw its logic symbol and truth table

How much is zero minus one?

The solution of x minus one equals zero

Plus or minus 1

Three plus two minus five times zero and so on? Help

3+2-5×0=5

How much is three plus two minus five times zero?
All smart people! It's not hard for you, mifa

3.

(1 / 8 + 1 / 9 + 1 / 10 + 1 / 11) * (1 / 9 + 1 / 10 + 1 / 11 + 1 / 12) - (1 / 8 + 1 / 9 + 1 / 10 + 1 / 11 + 1 / 12) * (1 / 9 + 1 / 10 + 1 / 11) is equal to?
It should be easy to understand
emergency

Let 1 / 9 + 1 / 10 + 1 / 11 = a
∴（1/8+1/9+1/10+1/11）*（1/9+1/10+1/11+1/12）-（1/8+1/9+1/10+1/11+1/12）*（1/9+1/10+1/11）
=(1/8+a)(a+1/12)-(1/8+a+1/12)a
=1/96+a/8+a/12+a²-a/8-a²-a/12
=1/96

What is 2.5 to 0.14
It's a step

2.5:0.14
=250:14
=125:7