Unless it's a fancy graphing calculator, you don't. When solving an inequality, you need to solve it as an equality, remaining mindful of the proper direction of the inequality symbol after each step.
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The symbol is < or > for example 10 > 9 this means 10 is greater than 9. But if you put 10 < 9 this would be incorrect because it indicates 9 is greater than 10 which is not true.
5>x<9
A square root sign.
The greater than or equal to symbol is put between two numbers, where the number on the left of the symbol is "greater than or equal to" the number on the right. That just means the number to the left is either bigger than the number on the right or it's equal to, or the same as, the number to the right. This is mostly used when you don't know exactly what the number on the left is, but you know it's larger or equal to the number on the left.
Let n be the number between 4 and 7 then the required expression is written:- 4 < n < 7 The symbol used is a "less than" symbol and the expression is 4 is less than n which is less than 7. When the arrowhead points to the right > then this is called a "greater than" symbol and we could put n > 4 and 7 > n.