Answer:
z = 19.
Explanation:
2(4z − 9 − 7) = 166 − 46
2(4z − 9 − 7) = 120
Divide both sides by 2:
4z − 9 − 7 = 60
4z = 76
z = 19
Given
2(4z - 9 - 7) = 166 - 46 ← simplify both sides
2(4z - 16) = 120 ← distribute parenthesis on left side
8z - 32 = 120 ( add 32 to both sides )
8z = 152 ( divide both sides by 8 )
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