Question

A+b=5 ,b+c=7 ,a+c=4 система уравнений

Answer 1

Такое решение!!!!!!
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Answer 2

To solve the system of equations, we can use various methods such as substitution, elimination, or matrix algebra. Let's use the method of substitution to find the values of variables a, b, and c.

Given the system of equations:

1. a + b = 5
2. b + c = 7
3. a + c = 4

Step 1: Solve the first equation (1) for 'a': a = 5 - b

Step 2: Substitute the value of 'a' from Step 1 into the third equation (3): (5 - b) + c = 4

Step 3: Now, solve this equation for 'c': c = 4 - (5 - b) c = 4 - 5 + b c = b - 1

Step 4: Substitute the values of 'a' and 'c' into the second equation (2): b + (b - 1) = 7

Step 5: Solve the above equation for 'b': 2b - 1 = 7 2b = 7 + 1 2b = 8 b = 8 / 2 b = 4

Step 6: Now that we have the value of 'b', we can find 'c': c = b - 1 c = 4 - 1 c = 3

Step 7: Finally, substitute the value of 'b' into the first equation (1) to find 'a': a = 5 - b a = 5 - 4 a = 1

So, the solution to the system of equations is: a = 1, b = 4, and c = 3.