Question

Find the value of x (7x - 12) 114

Answer 1

Answer:

(7x-12)=-5

-5x÷-5 114÷-5=

x=29

Answer 2

Solution:

$(7x - 12) + 114 = 180$

Reason: The cointerior angles equal 180°

Collecting like terms:

$7x + 102 = 180 \\ 7x = 180 - 102$

$7x = 78$

Divide both sides of the equation by the coefficient of 7x which is 7.

$\frac{7x}{7} = \frac{78}{7}$

$x = \frac{78}{7} = \\ = 11.14$

( The decimal answer is not necessary except if asked for)

I hope this helps.