Explanation:
1. x+6=93
x=93-6
x=87
2. 4x +15 =29
4x =29-15
4x=14
x=14/4
x=3.5
3. x+9 =53
x=53-9
x=44
4. 2(x+5)=18
2x+10 =18
2x=18-10
2x=8
x=8/2
x=4
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