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zheka24 [161]
3 years ago
6

А

Mathematics
1 answer:
ladessa [460]3 years ago
5 0

Answer:

x = 4

Step-by-step explanation:

AD = BC

8x - 12 = 20

8x = 20 + 12

8x = 32

\frac{8x}{8}  =  \frac{32}{8}

x = 4

to be sure

8x - 12 { = }^{?} 20

8 \times 4 - 12 { = }^{?} 20

32 - 12 { = }^{?} 20

20 = 20

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