4x-5.
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11x+9=7x+21 11x-7x=4 4x+9=21 21-9=12 4x=12 12 divided by 4= 3 x=3
If: 11x+25 = 7x+15 then there is only one solution and it is x = -2.5
First of all, let's agree on what the question is ...The question is: What's the number for 'x' that makes this statement true ?Here's how to find it:11x - 4 = 7x + 16Add 4 to each side:11x = 7x + 20Subtract 7x from each side:4x = 20Divide each side by 4:x = 5
4x + 8 + 7x + 12 = 11x + 20
x=3