2007-05-08 06:42:38 · 10 answers · asked by Bryan P 1 in Science & Mathematics ➔ Mathematics
x = 2/5 or 0.4; one finds this as follows:
Add 4 to both sides of the equation. Then:
2 = 5x. Dividing by 5,
2/5 = x. QED
Live long and prosper.
2007-05-08 06:49:05 · answer #1 · answered by Dr Spock 6 · 0⤊ 0⤋
-2=5x-4 add 4 to both sides
+4 +4
2=5x divide both sides by 5
x= 2/5
2007-05-08 13:51:18 · answer #2 · answered by Mr. Brownstone 3 · 0⤊ 0⤋
-2=5x-4
add 4 to both sides
2=5x
Divide by 5
2/5 = x
2007-05-08 13:52:20 · answer #3 · answered by danjlil_43515 4 · 0⤊ 0⤋
HERE IS HOW TO SOLVE YOUR QUESTION>>
** / = DIVIDE (THE SLASH SYMBOL SYMBOLIZES DIVISION)
first : -2+4 = 5x -4+4
then : 2 = 5x
after : 2/5 = 5x/5
then you get : 0.4 = x
and to verify the answer do the following>>>
the original question is -2 = 5x -4
you must verify the right side first : 5 (0.4) -4
= 2 -4
= -2
after wards you must verify that the right side is equal to the left side : l.s = -2 and r.s = -2
in conclusion left side = right side
so x is equal to 0.4 and that is the answer!
2007-05-08 14:02:44 · answer #4 · answered by pinkrox 1 · 0⤊ 0⤋
5x = 2
x = 2 / 5
2007-05-08 13:50:02 · answer #5 · answered by Como 7 · 0⤊ 0⤋
-2+4=5x-4+4
2=5x
2/5=5x/5
2/5=x
2007-05-08 14:34:48 · answer #6 · answered by Dave aka Spider Monkey 7 · 0⤊ 0⤋
-2=5x-4
+4
2=5x
/2
0.4=x
x=0.4
2007-05-08 13:50:54 · answer #7 · answered by hello_mrs_bunny 2 · 0⤊ 0⤋
-5x = -2
x=2/5 or x=0.40
2007-05-08 14:05:10 · answer #8 · answered by Anonymous · 0⤊ 0⤋
ADD 4 to -2
2=5x
DIVIDE 2 by 5
.4=x
2007-05-08 13:51:11 · answer #9 · answered by Anonymous · 0⤊ 0⤋
.25
2007-05-08 13:50:33 · answer #10 · answered by Anonymous · 0⤊ 0⤋