2007-04-10 12:36:36 · 5 answers · asked by Lozza 2 in Science & Mathematics ➔ Mathematics
-3(5t - 10) = -15t + 30
include the -. so
7 - 15t + 30 = 67
-15t = 30
t = -2
2007-04-10 12:39:42 · answer #1 · answered by Philo 7 · 0⤊ 0⤋
You must distribute the negative in front of the 3. It's not 7 minus 3 times 5t minus 10 equals 67. It's actually 7 plus negative 3 times 5t minus 10 equals 67.
2007-04-10 19:40:43 · answer #2 · answered by its_victoria08 6 · 0⤊ 0⤋
take -3 and multiply by each term in the quantity
7 - 15t + 30 = 67
2007-04-10 19:40:00 · answer #3 · answered by 7 · 0⤊ 0⤋
I have also learning distributive properties:
-3 is a distribute number. The distribute formula is used in this problem.
2007-04-10 21:10:28 · answer #4 · answered by rosie2444 2 · 0⤊ 0⤋
Mult by -3 to make -15t +30
2007-04-10 19:38:55 · answer #5 · answered by richardwptljc 6 · 0⤊ 0⤋