Question

A=i+j+8k b=-9+j+8k как решать

Answer 1

какой класс?

Что то знакомое,может у меня есть в тетради ответ

Answer 2

To solve the system of equations A = i + j + 8k and B = -9 + j + 8k, we need to find the values of variables i, j, and k that satisfy both equations simultaneously. There are several methods to solve systems of linear equations, but one common approach is substitution. Here's how you can do it step by step:

Step 1: Write down the system of equations: A = i + j + 8k ...(Equation 1) B = -9 + j + 8k ...(Equation 2)

Step 2: Solve for one variable in terms of the others: From Equation 1, isolate i: i = A - j - 8k ...(Equation 3)

Step 3: Substitute the expression for i from Equation 3 into Equation 2: B = -9 + j + 8k

Step 4: Simplify and solve for j: B + 9 = j + 8k

Step 5: Isolate j: j = B + 9 - 8k ...(Equation 4)

Step 6: Substitute the expression for j from Equation 4 into Equation 3 to find k: i = A - (B + 9 - 8k) - 8k i = A - B - 9 + 8k - 8k i = A - B - 9

Step 7: We have found the values of i and j in terms of A, B, and k. Now, the solutions can be written as follows: i = A - B - 9 j = B + 9 - 8k k can be any real number since it is not restricted by any equation.

So, the solutions to the system of equations A = i + j + 8k and B = -9 + j + 8k are: i = A - B - 9 j = B + 9 - 8k k can be any real number.