Question

(a)if the area is 3x cm square make an equation and find x(b)if the perimeter is 40cm make an equation and find x

Answer 1

Step-by-step explanation:

a.(x-5)8= 3x

8x-40 =3x

5x=40

x=8

b. 2(8+x-5)=40

(8+x-5)=20

x+3=20

x = 17

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