Question

7,8a+2,3a-5a при а=6

Answer 1

7,8a+2,3a-5a=(7,8+2,3-5)а=5,1а

При  а=6: 5.1а=5.1*6=30.6

Answer 2

To evaluate the expressions for the given values of 'a,' simply substitute 'a' with the given value and perform the arithmetic operations. Let's calculate each expression:

1. For 7: Since there is no 'a' in this expression, it remains the same regardless of the value of 'a.' Result: 7

2. For 8a + 2: Substitute 'a' with 6: 8 * 6 + 2 = 48 + 2 = 50 Result: 50

3. For 3a - 5a: Substitute 'a' with 6: 3 * 6 - 5 * 6 = 18 - 30 = -12 Result: -12

So, when 'a' is 6:

1. 7 remains the same: 7
2. 8a + 2 equals 50
3. 3a - 5a equals -12