Question

please answer my questions​

Answer 1

Step-by-step explanation:

answer please give thanks

Answer 2

Answer:

1. (a) 3a + 2b = 12

(b) 2a - b = 1

2. (a) x + y + z = -2

(b) 2x - 3y + 6z = - 26

3. (a) p + q + r + 1  = 0

(b) 2pq + 3qr - 4pr = 24

4. $\frac{2}{3} z + 6$  $= 0$

5. Left Hand Side = 7a + b + c = 4

Right Hand Side = 2abc = 4

Shown that, 7a + b + c = 2abc

Step-by-step explanation:

1. (a) 3a + 2b = 3.2 + 2.3 = 6 + 6 = 12

(b) 2a - b = 2.2 - 3 = 4 - 3 = 1

2. (a) x + y + z = -1 + 2 - 3 = 2 - 4 = -2

(b) 2x - 3y + 6z = 2.(-1) - 3.(2) + 6.(-3) = -2 - 6 - 18 = - 26

3. (a) p + q + r + 1 = -3 + 0 + 2 + 1 = 0

(b) 2pq + 3qr - 4pr = 2.(-3).0 + 3.0.(2) - 4.(-3).(2) = 0 + 0 + 24 = 24

4. $\frac{2}{3} z + 6$  $=\frac{2}{3} . (-9) + 6$  $= -6 + 6$  $= 0$

5. Left Hand Side = 7a + b + c = 7.(1) + (-2) + (-1) = 7 - 2 - 1 = 7 - 3 = 4

Right Hand Side = 2abc = 2.(1)(-2)(-1) = 2 . 2 = 4

Therefore, 7a + b + c = 2abc