Answer:
x = 7.5
Explanation:
2x + 8 = 23
2x + 8 - 8 = 23 - 8
2x = 15
2x ÷ 2 = 15 ÷ 2
x= 7.5
2(x+4)= 23
2x+8= 23
2x=15
x=7.5
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