Math Equations help plz 10points 2 Ques?

2009-04-01 8:27 am
Solve for x: 8x + 3 = 5x - 3




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Solve for x: -2x + 5 = -4x + 7

回答 (11)

2009-04-01 8:31 am
✔ 最佳答案
8x + 3 = 5x - 3
3x = 6
x = 2

Answer: x = 2

- 2x + 5 = - 4x + 7
2x = 2
x = 1

Answer: x = 1
2016-10-25 4:11 pm
for my section,use BIDMAS: Brackets Indices branch Multiplication upload Subtract it is a mnemonic for order in which mathematical calculations are finished. First,do the sum of the numbers contained in the brackets: a million+2=3 Secondly,you would use branch:6÷2=3 0.33, as you at present have 2 numbers next to at least one yet another like this: 33 you would multiply them jointly: 3x3=9 And there, now you've your answer: 9 wish it is constructive and comprehensible for you :)
2009-04-01 11:52 am
1)
8x + 3 = 5x - 3
8x - 5x = -3 - 3
3x = -6
x = -6/3
x = -2

2)
-2x + 5 = -4x + 7
-2x + 4x = -5 + 7
2x = 2
x = 2/2
x = 1
2009-04-01 10:33 am
8x+3=5x-3
collect like terms together
3x=-6 therefore x=-2

-2x+5=-4x+7
collecting like terms together
2x=2
therfore x=1
2009-04-01 9:15 am
Question 1
3x = - 6
x = - 2

Question 2
2x = 2
x = 1
2009-04-01 8:39 am
for qtn 1

8x + 3 = 5x - 3
5x - 8x = 3 + 3
-3x = 6
hence,

X = -2


for qtn 2

-2x + 5 = -4x + 2
5 - 2 = -4x+ 2x
3 = -2x

hence,
x= -1.5
2009-04-01 8:37 am
8x+3=5x-3
8x-5x=-3-3
3x=-6
x=-2


-2x+5=-4x+7
-2x+4x=7-5
2x=2
x=1
2009-04-01 8:33 am
in 8x=3=5x-3
8x-5x=-3-3
3x=-6
x=-2

in -2x+5=-4x+7
4x-2x=7-5
2x=2
x=1
2009-04-01 8:33 am
8x -5x = -3-3
3x=-6
x=-2

-2x+4x= 7-5
2x=2
x=1
2009-04-01 8:33 am
8x + 3 = 5x - 3
8x - 5x = -3 - 3
3x = -6
x = -2


-2x + 5 = -4x + 7
-2x + 4x = 7 - 5
2x = 2
x = 1


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