math homework help?

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solve the following equation:2/3(X-1)-1/5(x-3)=x+1

2007-09-06 10:16:56 · 3 answers · asked by Loki 1 in Science & Mathematics ➔ Mathematics

3 answers

2/3(X-1)-1/5(x-3)=x+1
10(x-1) - 3(x-3) = 15(x+1)
10x-10-3x+9 = 15x+15
10x -3x -15x = 15 +10 -9
-8x = 16
x = -2

2007-09-06 10:25:42 · answer #1 · answered by ironduke8159 7 · 0⤊ 0⤋

2/3x - 2/3 - 1/5x + 3/5 = x + 1
2/3x - 1/5x = 3/5 -2/3 - 1
10/15x - 3/15x = 9/15 - 10/15 - 15/15
7/15x = - 16/15
x = - 16/15 * 15/7
= - 16/7

Answer: - 16/7 or - 2 2/7

2007-09-10 09:55:46 · answer #2 · answered by Jun Agruda 7 · 3⤊ 0⤋

2/3(x-1)-1/5(x-3)=x+1

(2/3)x-2/3-(1/5)x+3/5=x+1

(7/15)x-19/15=x+1

-34/15= (8/15)x

x= -17/4

2007-09-06 17:39:36 · answer #3 · answered by yoko 2 · 0⤊ 0⤋