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____ [38]
3 years ago
7

I need help on this question (^~^;)ゞ​

Mathematics
1 answer:
vfiekz [6]3 years ago
7 0

Answer:

21) x = 0

23) x = 7

Step-by-step explanation:

In a parallelogram, the opposite sides are congruent. Using this fact, we can create equations for both problems.

21)

2x + 18 = 18

Subtract 18.

2x = 0

Divide by 2.

x = 0

23)

2x - 3 = 11

Add 3.

2x = 14

Divide by 2.

x = 7

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