Question

Explain why 2(z – 1) = 4(z + 5) has one solution.

Answer 1

because if its done any other way it will be incorrect and z = 2

Explanation:

Answer 2

2(z - 1) = 4(z + 5)

2z - 2 = 4z + 20

minus 2z from the whole equation

-2 = 2z + 20

add 2 to the other side

0 = 2z + 22

2z = -22

z = -11

there is only one solution cuz its a linear equation ( not sure tho )