Question

При каком значении а уравнение (a + 5) x = 12 имеет корень равный 4 ?

Answer 1

(a+5)*4=12
a+5=12/4
a+5=3
a=-2

Answer 2

(1+5)* х=12
6 х =12
х=12:6
х=2
а =1

Answer 3

Solving the Equation (a + 5)x = 12 for a Root of 4

To find the value of a for which the equation (a + 5)x = 12 has a root equal to 4, we can solve the equation for a.

The equation (a + 5)x = 12 can be rearranged to solve for a as follows:

(a + 5)x = 12

To find the value of a when x = 4, we can substitute x = 4 into the equation and solve for a:

(a + 5)(4) = 12

Solving for a:

4a + 20 = 12

4a = 12 - 20

4a = -8

a = -2

Therefore, the value of a for which the equation (a + 5)x = 12 has a root equal to 4 is a = -2.