How to do the problem1page 48 1-4 in the second volume of seventh grade mathematics published by People's Education Press?

You can't solve inequalities yet. You can solve them according to the examples in the book. If you can't solve it, you can move it all up. Everyone has no teaching materials.

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(1) solution: 6x+21>; 23 (3) Solution 3x+9

6x>2-7x & lt-49

x & gt 1/3x & gt； seven

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