The steps below show the incomplete solution to find the value of x for the equation 7x – 3x – 4 = –1 + 21:

1 answer:

5 0

Step 1 : 7x - 3x - 4 = -1 +21
Step 2 : 7x - 3x - 4 = 20
Step 3 : 4x - 4 = 20
Step 4 4x -4 +4 = 20 + 4
4x = 24

Answer 4x = 24

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