(d) 3(x + 7) - 4 = 7x-1
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3(x + 7) - 4 = 7x-1
3x +21 -4 = 7x -1
19+1 = 7x -3x
20 = 4x
20/4 = x
5=x
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Answered by
3
Answer:
3x+21 -4= 7 x -1
3x-7x=-1+4-21
-4x=-18
X=18/4
X=9/2
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