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Mathematics
Lillie Nunez
9 May, 05:05
39 - 7X = - 4 (7X + 7) + 4
- = minus sign
- = negative sign
+2
Answers (
1
)
Bambi
9 May, 08:14
0
x=-3
Step-by-step explanation:
39 - 7X = - 4 (7X + 7) + 4
Distribute
39 - 7x = - 28x - 28 + 4
Combine like terms
39 - 7x = -28x - 24
Add 28x to each side
39 - 7x+28x = -28x+28x - 24
39+21x=-24
Subtract 39 from each side
39-39+21x = - 24 - 39
21x = - 63
Divide by 21
21x/21 = - 63/21
x = - 3
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