can anyone please answer this math equation and show the formulas. thank you
2006-11-19 06:16:13 · 33 answers · asked by Anonymous in Education & Reference ➔ Homework Help
5x + 3=2x + 18
Ok first, you can either subtract 5x OR 2x from both sides, but let's subtract 2x because it's easier.
3x + 3 = 18
Subtract 3 from both sides.
3x = 15
Divide by 3 on both sides.
x = 5
2006-11-19 06:18:16 · answer #1 · answered by Anonymous · 1⤊ 0⤋
X=5
2006-11-19 06:18:50 · answer #2 · answered by solarfusion7 2 · 1⤊ 0⤋
5
2006-11-21 04:25:54 · answer #3 · answered by glocko_2k6 1 · 0⤊ 0⤋
1)5X = x equals 9
so 5 times 9=45 plus 3=48
2) 2x = x equals 15
so 2 times 15=30 plus 18=48
x value is an assumption
so 5x+3=2x+18 is
5x9+3=48
2x15+18=48
2006-11-19 06:26:06 · answer #4 · answered by **tomtom 5 · 0⤊ 0⤋
Multiply a number by 2 and add eighteen. Then subtract 3 from that total. If the answer can be divided by 5, then you are correct.
eg 2 x 5 = 10 10 + 18 = 28 28 - 3 = 25 25 divided by 5 = 5 therefore x must be 5.
2006-11-19 06:25:23 · answer #5 · answered by Anonymous · 0⤊ 0⤋
you be attentive to you have the answer once you have x on one component of the equals sign and a sort on the different. you start up off by potential of figuring out that equals added (subtracted) to equals yields equals. subsequently, in case you subract 3 from the two aspects 5x + 3 - 3 = 2x - 18 - 3 you have 5x = 2x - 21 Then, you are able to subtract 2x from the two aspects 5x - 2x = 2x - 2x - 21 to get 3x = - 21 Then, using the valuables that equals multipled(divided) by potential of nonzero equals yields equals we divide the two aspects by potential of three to get 3x/3 = - 21/3 to get x = - 7
2016-12-10 11:52:00 · answer #6 · answered by ? 4 · 0⤊ 0⤋
5x + 3 = 2x + 18
5x + 3 - 2x = 2x + 18 - 2x
3x + 3 = 18
3x + 3 - 3 = 18 - 3
3x = 15
3x/3 = 15/3
x = 5
The answer is x = 5
Insert the x value into the equation
- - - - - - - - - - - - - - - - - - - - - - -
Check
5x + 3 = 2x + 18
5(5) + 3 = 2(5) + 18
25 + 3 = 10 + 18
28 = 28
- - - - - - s-
2006-11-19 06:23:00 · answer #7 · answered by SAMUEL D 7 · 0⤊ 0⤋
x= 5
2006-11-19 06:19:19 · answer #8 · answered by Anonymous · 0⤊ 0⤋
5x+3=2x+18
Get rid of the 3 on the left. Subtract 3 from both sides
5x+3-3=2x+18-3
5x=2x+15
Get 2x to the left. Subtract 2x form both sides.
5x-2x=2x-2x+15
3x=15
Get rid of the 3. Divide both sides by 3.
3x/3=15/3
x=5
2006-11-19 10:49:47 · answer #9 · answered by hockey craze99 4 · 0⤊ 0⤋
5x + 3 = 2x +18
5x-2x+18-3 ( when we move the numbers over the = sign we inverted the sign)
3x=15
x=5
to test it we put the answer for x in the formula
5(5)+3 = 2(5) +18
25+3 = 10+18
28=28
2006-11-19 06:30:48 · answer #10 · answered by Anonymous · 0⤊ 0⤋
First you subtract 2x from both sides and you get
5x + 3=2x + 18
-2x -2x
3x + 3=18
Then you subtract 3 from both sides and you get
3x + 3 =18
-3 -3
3x=15
Divide both sides by 3 to get x by itself and you get
3x=15
/3 /3
x=5
So your answer is x is equal to 5
Plug 5 back in for x to check your answer and make sure it is correct.
5(5) + 3=2(5) + 18
25 +3=10 + 18
28=28
Since that equation is true, x=5 is the right answer.
2006-11-19 06:21:21 · answer #11 · answered by sg 3 · 0⤊ 0⤋