B
Because first “reduce” both sides of the top equation by the same to simplify it. See what both sides have in common.
They both have 3 long rectangles and 2 Sm. Squares.
That leaves, 2 long rectangles = 6 squares.
Which means that each long rectangle = 3 squares
The given equation is :
Divide both sides by 5
Add 0.3 to both sides.
Multiply a on both sides.
Hence ... Answer
50 is the answer to your question glad to help
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