Answer:
Step-by-step explanation:
x + 4 = 2x + 1 -x -x 4 = 1x + 1 -1 -1 3 = 1x -- -- 1 1 3 = x
Check: 3 + 4 = 2(3) + 1 7 = 6 + 1 7 = 7
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