how do i solve this please give step by step directions:
2(6-4d)=25-9d
2007-09-27 12:17:40 · 6 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
Algebra I*
2007-09-27 12:19:53 · update #1
expand the 2 to both and -4d on the left side.
=> 12 - 8d = 25 - 9d
add 9d on both sides.
12 + 1d = 25
minus 12 on both sides
d= 13
2007-09-27 12:21:28 · answer #1 · answered by Anonymous · 0⤊ 0⤋
Solve items inside ( ).
12 - 8d = 25 - 9d
Add 9d to both sides.
Subtract 12 from both sides.
12 - 8d = 25 - 9d
-12 + 9d = -12+9d
d = 13
2007-09-27 12:22:11 · answer #2 · answered by Steve B 6 · 0⤊ 0⤋
2(6-4d)=25-9d
Remove the parentheses getting:
12-8d =25 -9d
Move all like terms so they are on same side. Remember to change their sign when you move them.
9d-8d = 25-12
Collect the like terms, getting:
d = 13
2007-09-27 12:25:01 · answer #3 · answered by ironduke8159 7 · 0⤊ 0⤋
2(6-4d)=25-9d
distribute, 12-8d=25-9d
+8d +8d
12=25-d
-25
-13=d
2007-09-27 12:27:52 · answer #4 · answered by spiritair04 2 · 0⤊ 0⤋
2(6-4d)=25-9d
Distribute:
2(6) - (4d)(2) = 25 - 9d
12 - 8d = 25 - 9d
-8d = 25 - 9d - 12
-8d = 13 - 9d
-8d + 9d = 13
d = 13
2007-09-27 12:22:21 · answer #5 · answered by Anonymous · 0⤊ 0⤋
first multiply out 2(6-4d) which equals 12-8d
so now you have 12-8d=25-9d
now add 8d to both sides so you now have 12=25-1d
now solve for d: subtract 25 from both sides and you get:
-13=-1d so d=13
2007-09-27 12:28:18 · answer #6 · answered by thegreenknight1981 2 · 0⤊ 0⤋