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shepuryov [24]
3 years ago
15

14 POINTS 7x - 3 = 18

Mathematics
2 answers:
Sunny_sXe [5.5K]3 years ago
8 0
First is for you to try to leave X alone on the left side to find its value.
Step 1: -3 is moved to the right side as a addition so the equation now should be 7x=21.
Step 2: We need to leave X alone so we also move 7 to the right side as a division. Your equation should look like this x=21/7, divide it and the result is x=3
Hope This Helps You
Svetlanka [38]3 years ago
5 0
Subtract 3 first so it would be 7x=15
then divide by 7 so x would be approximately 2.14
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if we were to solve both equations for "y", we'd get

10x-18y=2\implies 10x-2=18y\implies \cfrac{10x-2}{18}=y\implies \cfrac{5}{9}x-\cfrac{1}{9}=y \\\\\\ -5x+9y=-1\implies 9y=5x-1\implies y=\cfrac{5x-1}{9}\implies y = \cfrac{5}{9}x-\cfrac{1}{9}

notice, the 1st equation is really the 2nd in disguise, since both lines are just pancaked on top of each other, every point in the lines is a solution or an intersection, and since both go to infinity, well, there you have it.

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2 years ago
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elixir [45]

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Step-by-step explanation:

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3 0
2 years ago
Read 2 more answers
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