kingcristian4 kingcristian4

20-12-2019
Mathematics

contestada

Solve for X if MN =81
A)9
B)10
C)11
D)12

Solve for X if MN 81 A9 B10 C11 D12 class=

Respuesta :

BrainyAlice28 BrainyAlice28

20-12-2019

Answer:

D

Step-by-step explanation:

You can see, MN consists of the three lines in the picture. So you just need to sum them tougher in an equation with it's original value 81.

5 + 3x - 8 + 4x = 81

7x = 81 + 3

7x = 84 / : 7

x = 12

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