the problem2(x-3)-3(x+5)=3(x-2)-7
for the second 3 do I count it as a negitive when multiplying it to the 5?
2006-09-20 09:24:29 · 15 answers · asked by Ash1227 2 in Science & Mathematics ➔ Mathematics
yes
-3(x+5) = -3x-15
2006-09-20 09:25:29 · answer #1 · answered by jimvalentinojr 6 · 1⤊ 1⤋
Yes
2(x-3)-3(x+5)=3(x-2)-7
2x-6-3x-15=3x-6-7
-x-21=3x-13
-8=4x
-2=x
2006-09-20 16:29:58 · answer #2 · answered by HW 4 · 0⤊ 1⤋
Yes. You are not really multiplying by a "3", but by a "-3". So the result would be
2x-6-3x-15=3x-6-7
-x-21=3x-13
-4x=8
x=-2
2006-09-20 16:28:47 · answer #3 · answered by friendlyhelp04 6 · 0⤊ 1⤋
Yes
Once you expand you'll get:
2x-6 -3x -15 = 3x - 6 -7
-x - 21 = 3x - 13
-8 = 4x
-2 = x OR x = -2
2006-09-20 16:28:17 · answer #4 · answered by costco.mart 2 · 0⤊ 1⤋
2x - 6 - 3x - 15 = 3x - 6 - 7
2x - 3x - 3x = 15 + 6 - 6 - 7
-4x = 8
-4x/-4 = 8/-4
x = -2
So, checking our work (plugging in -2 for x):
2(-2-3)-3(-2+5) = -19
3(-2-2)-7 = -19
It checks out.
Bam.
2006-09-20 16:38:38 · answer #5 · answered by rod_j_clifton 2 · 0⤊ 0⤋
Yes. The minus sign is basically a negative, and you distribute it to all the values within the parentheses, so it would be -3x-15 for that part.
2006-09-20 16:27:04 · answer #6 · answered by Sean 2 · 0⤊ 1⤋
yes you do
the answer to the problem is
2x-6-3x-15=3x-6-7
x-11=3x-13
-11=2x-13
2=2x
1=x
2006-09-20 16:47:05 · answer #7 · answered by prosthetiichead 1 · 0⤊ 0⤋
2-> 2*(x-3)-3*(x+5)=3*(x-2)-7
#3: (2*(x - 3)) - (3*(x + 5)) = (3*(x - 2)) - 7
3-> simplify
#3: -1*(x + 21) = (3*x) - 13
3-> x
#3: x = -2
2006-09-20 16:26:29 · answer #8 · answered by Anonymous · 0⤊ 1⤋
yes, so it multiplies out to -3x-15
2006-09-20 16:26:47 · answer #9 · answered by banjuja58 4 · 1⤊ 1⤋
Yes.
2006-09-20 16:26:36 · answer #10 · answered by bruinfan 7 · 0⤊ 1⤋