its been forever since i have done math
i also need to know step by step to the solution
thanks
2007-09-13 16:13:08 · 9 answers · asked by Anonymous in Science & Mathematics ➔ Mathematics
expand out the brackets:
-t - 6 + 4t - 7 = 23
collect like terms:
3t -13 = 23
add the 13 to both sides:
3t = 36
divide both sides by 3:
t = 12
check by substituting t = 12 into the original equation:
2007-09-13 16:17:59 · answer #1 · answered by Anonymous · 0⤊ 2⤋
Ans. 36/5
t-2(3-2t)-7=23
t-6+4t-7=23
5t-13=23
5t=23+13
5t=36
t=36/5
2007-09-13 16:30:59 · answer #2 · answered by keano8882002 1 · 0⤊ 0⤋
t-2(3-2t)-7=23 (your qns)
t-6+4t-7=23
(simplify them by multiplication. Take note of the minus sign outside the bracket)
5t=36
t= 36/5
2007-09-13 16:22:18 · answer #3 · answered by appl3juiz3 2 · 0⤊ 0⤋
First: eliminate parenthesis - distribute the outer term with the terms in the parenthesis.
t - 2(3) - 2(-2t) - 7 = 23
t - 6 - (- 4t) - 7 = 23
t - 6 + 4t - 7 = 23
t + 4t - 6 - 7 = 23
5t - 13
SEc: combine "like" terms - add 13 with both sides (when you move a term to the opposite side, always use the opposite sign).
5t - 13+13 = 23+13
5t = 23+13
5t = 36
Third: isolate "t" by itself - divide both sides by 5.
5t/5 = 36/5
t = 36/5
2007-09-13 16:21:34 · answer #4 · answered by ♪♥Annie♥♪ 6 · 0⤊ 0⤋
Start by multiplying the -2 through the brackets. this would give you t-6+4t-7=23. Combine the like terms, 5t-13=23, then add 13 to both sides, 5t=36, divide by 5. T equals 7.2
2007-09-13 16:21:57 · answer #5 · answered by Craig W 1 · 0⤊ 0⤋
t-2(3-2t)-7=23
t - 6 + 4t - 7 = 23
5t = 36
t = 36/5 = 7.2
2007-09-13 16:22:16 · answer #6 · answered by Anonymous · 0⤊ 0⤋
t - 6 + 4 t - 7 = 23
5 t - 13 = 23
5 t = 36
t = 36 / 7
2007-09-14 23:42:48 · answer #7 · answered by Como 7 · 2⤊ 0⤋
t-2(3-2t)-7=23
t-6+4t-7=23
t+4t-6-7-23=0
5t-36=0
5t=36
t=36/5
t=7 1/5
2007-09-14 04:37:11 · answer #8 · answered by Polar 2 · 0⤊ 1⤋
t-2(3-2t)-7=23
t-6+4t-7=23
5t-13=23
5t=23+13
5t=36
t=36/5
t=7.2
2007-09-13 16:21:54 · answer #9 · answered by Freesia 5 · 0⤊ 2⤋