Rectangles: 3540

The dimensions of the left rectangle are 4 cm and (x+1) cm. The right rectangle consists of two rectangles: the upper one with dimensions of 3 cm and x cm and the lower one with a content of 7 cm2. We know that the content of the left rectangle is the same as the content of the right rectangle. Determine x.

Correct answer:

x =  3

Step-by-step explanation:


4(x+1)=3x+7

4·(x+1)=3·x+7

x = 3


x = 3/1 = 3

x = 3

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