Question

If 2x = 10, find the value of 1 - 2x

Answer 1

-9

Explanation:

First solve the equation, 2x=10 to get the value of x

2x = 10

x = 10÷ 2

x= 5

now, put this value of x in the expression 1-2x

1 - 2x

= 1- 2(5)

= 1- 10

= -9

Answer 2

2x=10

divide by 2

x=5

1-2x

1-2(5)

1-10

answer is -9