Find the value of x in the equation 9 – 4x = 57.           a. –16.5   b. –12   c. 16.5   d. 12

the following answer to this question is 12

answer is b. -12

first subtract 9 from both sides leaving you with -4x=48. Now, divide -4 on both sides and get x=-12

answer: two angles are called supplementary if they add up to 180°. example: the two angles (140° and 40°) are supplementary because they add up to 180°.

step-by-step explanation:

n=1.75+1.75

step-by-step explanation:

3.5/2=1.75