what is nine times the difference of twice a number and three yields the same results as the same number decreased by four?
2006-06-19 08:07:57 · 6 answers · asked by cityturtleblue 2 in Education & Reference ➔ Higher Education (University +)
The equation would look like:
9 * (2X - 3) = X - 4 so
18X - 27 = X - 4
17X - 27 = -4
17X = 23
X = 23/17
X = 1.35
2006-06-19 08:13:41 · answer #1 · answered by davidmi711 7 · 0⤊ 0⤋
9 * ( 2x -3 ) = x - 4
18x - 27 = x - 4
(18x - x) - 27 = (x - x) - 4
17x -27 + 27 = -4 + 27
17x = 23
x = 23/17
or rougly 1.3529411764705882352941176470588
(Check with a calculator)
9 * [( 2 * 1.3529411764705882352941176470588) - 3] = -2.6470588235294117647058823529412
(1.3529411764705882352941176470588) - 4 = -2.6470588235294117647058823529412
(Rounding errors, as 23 / 17 is likely an irrational number.
Unless you want to interpret it as
9* ( 3 - 2x ) = x - 4
27 - 18x = x - 4
27 + 4 - 18x + 18x = x + 18x - 4 + 4
31 = 19x
x = 31 / 19 ( or x = 1.6315789473684210526315789473684 )
check with a calculator:
9* [ 3 - 2*(1.6315789473684210526315789473684)] = -2.3684210526315789473684210526316
1.6315789473684210526315789473684 - 4 = -2.3684210526315789473684210526316
2006-06-19 08:44:59 · answer #2 · answered by Gregory G 1 · 0⤊ 0⤋
permit x be that unknown huge sort. In algebra, your fact is 7(6 - 2x) = x - a million. If we try to establish what for the linked fee of x, we remedy it this way: 7(6) - 7(2x) = x - a million 40 two - 14x = x - a million 14x + x = 40 two + a million 15x = 40 3 x = 40 3/15 or 2 13/15
2016-10-31 03:28:14 · answer #3 · answered by holliway 4 · 0⤊ 0⤋
100?
2006-06-19 08:10:21 · answer #4 · answered by Anonymous · 0⤊ 0⤋
1.3529411764705882352941176470588
2006-06-19 08:15:21 · answer #5 · answered by thomas w 2 · 0⤊ 0⤋
..............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................i dont know sorry : (
2006-06-19 08:13:04 · answer #6 · answered by nana ♥ 2 · 0⤊ 0⤋