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1 year ago

8

B=3/4a a+b=21 A. a=30 b=15 B.a=371/4 b=-161/4 C. a=20 b=11 D. a=12 b=9

1 answer:

lions [1.4K]1 year ago

6 0

Answer:

D option

Step-by-step explanation:

a + b = 21

Placing value of b as 3/4a,

a + 3/4a = 21

7a/4 = 21

a = 12

Putting value of a in b=3/4a,

b = 3 × 12/4 = 9

a = 12, b = 9

<em>Hope</em><em> </em><em>it</em><em> </em><em>helps</em><em>.</em><em> </em>

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