2007-03-07 21:18:23 · 8 answers · asked by jezreel j 1 in Science & Mathematics ➔ Mathematics
2/5 x + 2 = 1/5 x + 6
2/5 x -1/5 x + 2 = 1/5 x - 1/5x + 6
1/5 x +2 -2 = 0x + 6 -2
1/5x + 0 = 4
(1/5x + 0) * 5 = (4) * 5
x = 20
2007-03-07 21:33:27 · answer #1 · answered by Anonymous · 0⤊ 0⤋
First simplify the plusses:
2/5 X +2 -6 = 1/5 X
2/5 X -4 = 1/5 X
Then take away the denominator (the 5's on the bottom) by multiplying every term by 5:
5 (2/5 X) - 5 (4) = 5 (1/5 X)
Multiply through:
2 X - 20 = 1 X
2 X - 20 = X
Collect the X's on the same side:
2X - X -20 = 0
X - 20 = 0
X = 20
2007-03-07 21:26:47 · answer #2 · answered by charmedchiclet 5 · 0⤊ 0⤋
pemdas
first, parenthesis. There are none. Next,
exponentials. Again, none.
Then, multiplication. The only multiplication is that of variables, so,
division.
2 divided by five would be 0.4
one divided by five would be 0.2
okay, so revise it to state
0.4x+2=0.2x+6
you can cancel out the whole numbers
0.4x=0.2x+4
okay, so on the right side, x is multiplied by exactly half of what x is multiplied by on the left sied, and it is still four below it. Therefore four is half of x times 0.4,
so...
x = 8 divided by 0.4
so,
x = 20
let's see, two fifths of twenty is eight, plus two is ten
one fifth of twenty is four, plus six is ten,
so, there you go, that's the first algebra I've done in a while.
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2007-03-07 21:31:19 · answer #3 · answered by BuddhAnarchist 1 · 0⤊ 0⤋
2/5x+2=1/5x+6
=>2x+10=x+30
=>x=20!
;)
2007-03-07 21:23:27 · answer #4 · answered by Anonymous · 1⤊ 0⤋
2/5x-1/5x=6-2
1/5x=4
x=20
2007-03-07 21:46:02 · answer #5 · answered by Colin 2 · 0⤊ 0⤋
2/5x-1/5x=6-2
1/5x=4
x=20
2007-03-07 21:24:06 · answer #6 · answered by miinii 3 · 1⤊ 0⤋
depends, are you multiplying (x+2) by 2/5?
2007-03-07 21:27:32 · answer #7 · answered by Anonymous · 0⤊ 1⤋
maths isnt it. just rearrange it you get about 6.666666666666666667
2007-03-07 21:22:56 · answer #8 · answered by shep_02000 1 · 0⤊ 1⤋