i need help find the value of x
2007-09-24 14:13:21 · 12 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
7 x + 46 = 180
7 x = 134
x = 134 / 7
x = 19 1/7
2007-09-24 21:09:45 · answer #1 · answered by Como 7 · 2⤊ 0⤋
(5x+17)+(2x+29)=180
*combine like terms
(5x + 2x) + (17 + 29) = 180
7x + 46 = 180
*transpose 46 to get value of 7x
7x = 180 - 46
7x = 134
*transpose 7 to the right side to get the value of x
x = 134/7
2007-09-24 14:22:56 · answer #2 · answered by ZophiE 2 · 0⤊ 0⤋
The parentheses in this particular problem do not serve any purpose because everything is addition. Therefore, just drop the parentheses and combine all the like terms first:
5x+17+2x+29=180
7x+46=180
now you can actually start working the equation to isolate the x variable:
7x=180-46
7x=134
x=134/7 (in lowest terms as it is)
2007-09-24 14:23:39 · answer #3 · answered by cgflann 4 · 0⤊ 1⤋
(5x+17)+(2x+29)=180
Combine Like terms
7x + 46 =180
Subtract 46 from both sides.
7x= 134
Divide both sides by 7.
x=19 and 1/7
uhm. check my math because I did it in my head without writing it down or anything [[: but the steps are right. Just make sure the numbers are too. Hope this helps~
2007-09-24 14:17:54 · answer #4 · answered by Anonymous · 0⤊ 0⤋
5x+2x+17+29=180
7x+46=180
transpose
7x=180-46
7x=134
x= 134 / 7
x= 19.1429 aprox
2007-09-24 14:20:10 · answer #5 · answered by Anonymous · 0⤊ 0⤋
this sounds so much like the geometry i worked on last week...
5x + 17 + 2x + 29 = 180
7x + 46 = 180
7x = 134
x = 19
2007-09-24 14:23:27 · answer #6 · answered by Jim ((C.A.B.)) 6 · 0⤊ 0⤋
(5x+17)+(2x+29)=180
5x+17+2x+29=180
7x+46=180
7x=134
x=134/7 (or 19 1/7 or 19.14285714)
2007-09-24 14:20:22 · answer #7 · answered by Eric 5 · 0⤊ 0⤋
Yes. Subtract 17 from both sides. Subtract 29 from both sides. Combine the 5x and 2x to make 7x. Then divide both sides by x. This will give you the solution.
2007-09-24 14:16:47 · answer #8 · answered by Anonymous · 0⤊ 0⤋
5x+17+2x+29=180
7x=180-17-29
x=(180-17-29)/7
2007-09-24 14:17:50 · answer #9 · answered by B K Meal 1 · 0⤊ 0⤋
Yes
Combine the 'x' terms and the constants
5x + 2x = 180 - 17 - 29
7x = 134
I am sure you can do the rest...
2007-09-24 14:15:56 · answer #10 · answered by Mαtt 6 · 0⤊ 0⤋