Answer:
35=35
Step-by-step explanation:
-(6m+7)-6(-7-m)=35
-6m-7-6(-7-m)=35
Answer:
hli
Step-by-step explanation:
how r u dear hope u r fine
-70, -100, +20
Step by step explanation: Follow the pattern.
Based on the calculations, the unknown number is equal to 
- Let the unknown number be x.
<h3>How to find an
unknown number:</h3>
Translate the word problem into an algebraic expression, we have;
Adding 21 to the unknown number:

Multiplying the result by 3:

84 more than two-thirds of the unknown number:

Equating the equations, we have:

Cross-multiplying, we have:

Read more on word problems here: brainly.com/question/13170908
The answer is 15 square ft