2 years ago

What is the answer??

Mathematics

1 answer:

KonstantinChe [14]2 years ago

8 0

Answer:

x=12.2

<LMN=49.6

<SML=40.4

Step-by-step explanation:

3x+13+7x-45=90

3x+7x+13-45=90

10x-32=90

10x=122

x=12.2

3(12.2) + 13

36.6+13

49.6

7(12.2) -45

85.4-45

40.4

49.6+40.4=90

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