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Karo-lina-s [1.5K]
3 years ago
9

Four times a number increased by 3 is the same as twice the number increased by 9? I'm horrible at these

Mathematics
2 answers:
Anna71 [15]3 years ago
4 0
The question says:
4(x) +3 = 2(x) + 9 
so now you need to find x
first you should add -2(x) on both sides of the equation and then add -3 on both sides:
4(x) - 2(x) = 9 - 3 
2(x) = 6
now you can divide both sides by 2:
x = 6/2 
x = 3 :)))
I hope this is helpful
have a nice day
ziro4ka [17]3 years ago
3 0
Four times a number (we are gonna make that be "x") increased by 3 would be 4x+3 it says it is the same as (means it is equal to) twice the number (2x) increased by 9 (+9) so the full equation would be 4x+3=2x+9
You have to solve for the number (x).
4x+3=2x+9
-2x -2x (Have to get the x's to one side)
2x+3=9
-3 -3 (you have to get the numbers on one side too)
2x=6
/2 /2 (to get x alone)
X=3 (the number is 3)
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