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how do i solve this problem here?

how do i solve this problem here? class=

Verified Answer :

Vixro

x is equal to 6, as 6+4 equals 10.

10x7=70, which is the area

Area of a rectangle=length x width
In this case:
Area of this rectangle=70 u²
lenght=x+4
width=7

We can suggest the next equation:
7(x+4)=70

We solve the equation:
7(x+4)=70
7x+28=70
7x=70-28
7x=42
x=42/7
x=6

length=x+4=6+4=10

Answer: the equation would be :  7(x+4)=70; and the length would be 10u.

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