Solve for u
u\in \mathrm{R}
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15u+18\geq 15u+14
Use the distributive property to multiply 3 by 5u+6.
15u+18-15u\geq 14
Subtract 15u from both sides.
18\geq 14
Combine 15u and -15u to get 0.
u\in \mathrm{R}
This is true for any u.
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