9a + 3b - 11a - 4b = -2a -b
11a+9 = 4a+30 11a-4a = 30-9 7a = 21 Solution: a = 3
11a-3a =8a so 8a+9=-7 8a = -16 a=-2
b = 2a + 11a + b = 5 which is b = 5 - atherefore2a + 11 = 5 - a (which is b = b)2a + a = - 11 + 53a = - 6a = - 2looking at first equation substitute - 2 for a:b = 2a + 11b = 2*(- 2) + 11b = - 4 +11b = 7to check:a + b = 5- 2 + 7 = 5
A=4. Divide both sides by 11 and a=4
A - B = 11A = 11 + whatever ' B ' is.
9a + 3b - 11a - 4b = -2a -b
11a+9 = 4a+30 11a-4a = 30-9 7a = 21 Solution: a = 3
11a-3a =8a so 8a+9=-7 8a = -16 a=-2
b = 2a + 11a + b = 5 which is b = 5 - atherefore2a + 11 = 5 - a (which is b = b)2a + a = - 11 + 53a = - 6a = - 2looking at first equation substitute - 2 for a:b = 2a + 11b = 2*(- 2) + 11b = - 4 +11b = 7to check:a + b = 5- 2 + 7 = 5
A=4. Divide both sides by 11 and a=4
if A & B matrices then A into B not equals to B into A
6a + 5a = -11 11a = -11 a = -11/11 = -1
(11a + 8b)(11a - 8b)
11a + 9 = 4a + 30Subtract 9 from both sides to get: 11a = 4a + 21Subtract 4a from both sides to get:7a = 21Divide both sides by 7 to get:a = 3And there's your answer: a = 3
2a. (a, b and c are all equal.)
If a equals 3 and b equals minus 5 then a minus b equals what