Answer:
90
Explanation:
5(6 - 4) + X = 10 + 4 + 86
Perform multiplication on left side:
30 - 20 + X = 10 + 4 + 86
Combine left side numbers:
10 + X = 10 + 4 + 86
Combine right side numbers:
10 + X = 100
Subtract 10 from both sides:
10 + X - 10 = 100 - 10
X = 90