Question

From the sum of 11a+9b-7c and -7a-12b+8c, subtract the sum of 6a+14b-13c and 15a-b+12c.​

Answer 1

Sum of 11a + 9b - 7c & -7a - 12b + 8c = 4a - 3b + c ——> 1

Sum of 6a + 14b - 13c & 15a - b + 12c = 21a + 13b - c ——> 2

Subtract 2 from 1,

(4a - 3b + c) - (21a + 13b - c)

= 4a - 3b + c - 21a - 13b + c

= -17a - 16b + 2c ——> Answer

Answer 2

Answer:

11th a + 9 b -7 c + - 7a -12 b + 8C equals 20a - 1Bb +15 c and 6 a + 14 b minus 13 c - 15 a minus b + 12c equals to -9 a+ 13b - 1 c