Question

Determine by substitution, if :
b) 4 is a root of 2x - 3 = 5
please answer in detail
and I have also put another question on the app this is part b and part a 8s also there please answer both​

Answer 1

Answer:

Substitute x = 4,. 2x - 3 = 5. 2(4) - 3 = 5. 8 - 3 - 5 = 0. 5-5 = 0. Since it gives the value 0 , 4 is a root of the equation

Answer 2

Answer:

$x = 4 \\ \\ 2x - 3 = 5 \\ 2(4) - 3 = 5 \\ 8 - 3 = 5 \\ \underline{ \underline{ 5 = 5}}$