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Ierofanga [76]
3 years ago
14

The length and width of a rectangle are 7 cm and (x-8) cm respectively. Find the value of x if the area of the rectangle is 42 c

m(square)
Mathematics
2 answers:
umka21 [38]3 years ago
8 0
So it would be                                                  7 (x - 8) = 42
divide by 7 on both sides                              ______    ___
                                                                              7            7
                                                                            (x - 8) =   6
                                                                               +8   = +8
                                                                                 x    =  14 cm
soldi70 [24.7K]3 years ago
6 0
Given length l=7
         width w=x-8
          area=42
area=wl
42=7(x-8)
42=7x-56
7x=98
x=98/7
x=14
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