12 boys. 7 * 3 is 21. 21 girls. 4*3 is 12. 12 boys 21 girls
Answer:
x = 10
Step-by-step explanation:
First, distribute:

Next, subtract
from both sides:

(multiply
by 2 to get common denominator,
)

Next, subtract
from both sides:

(multiply
by 2 to get common denominator,
)
⇒ 
Next, multiply both sides by 10:

FInally, divide both sides by -1:
x = 10
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The Answer is <u><em>7.88</em></u>
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Answer:
71
Step-by-step explanation:
vertical sides are congruent
x+30=101
x=71
No, it would end up being 20a-32 which is not equivalent to 12a-6