aubreyphillips478
Answered

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ill give brainliest

Your options are:

A. 115
B. 42
C. 159
D. 21​

Ill Give Brainliest Your Options AreA 115B 42C 159D 21 class=

Sagot :

Answer:

the answer is D

Step-by-step explanation:

3x-21=x+7

2x-21=7

2x=28

x=14

substitute x for 14

14+7=21

2X14-21+21

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