Question

Find MN LM = 3y + 4 MN = 7y + 9 LN = 143

Answer 1

Answer:

B. 100

Step-by-step explanation:

$3y+4+7y+9=143$

$10x+13=143$  143-13=130

10x=130 divide both sides by 10 130/10= 13 x=13

MN=7(13)=91+9=100

LN=3(13)=39+4=43

100+43