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solve for x

4x + 9
16x - 9

Solve For X 4x 9 16x 9 class=

Sagot :

Answer:

9

Step-by-step explanation:

Vertical lines are parallel so the given interior angles are supplementary and their sum is equal to 180:

4x + 9 + 16x - 9 = 180 add like terms

20x = 180 divide both sides by 20

x = 9