x+9=5(4x-2)

Answer 1

expand both sides to remove parentheses:
x+9 = 20x -10
Collect like terms on the left side of the equals sign, and constant terms on the right:
x-20x = -10 -9
-19x = -19
divide both sides by the coefficient of the term in x:
x = -19/-19
=1

Answer 2

distribute the 5 first

x+9=20x-10

combine like terms

19=19x

x= 19/19

x=1

Answer 3

thanks