Answer:
1/4
Step-by-step explanation:
1. 18u−15−7u=3u−12−1
2. 11u−15=3u−12−1 (Simplify 18u-15-7u18u−15−7u to 11u-1511u−15)
3. 11u−15=3u−13 (Simplify 3u-12-13u−12−1 to 3u-133u−13)
4. 11u=3u−13+15 (Add 1515 to both sides)
5. 11u=3u+2 ( Simplify 3u-13+153u−13+15 to 3u+23u+2)
6. 11u−3u=2 ( Subtract 3u3u from both sides)
7. 8u=2 (
Simplify 11u-3u11u−3u to 8u)
8. u=
2/8 (Divide both sides by 8)
9.u=1/4 (Simplify 2/8 to 1/4)
