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4 times a number minus 7 is greater than or equal to one

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1 Answer

HI Aubry;
4x-7≥1
Let's add 7 to both sides...
7+4x-7≥1+7
4x≥8
Let' divide both sides by 4...
(4x/4)≥(8/4)
x≥2
 
Please do not forget...
If I had multiplied either side by a negative number, the ≥ would have become ≤.