Answer:
4.5 lb
Step-by-step explanation:
1.5*3 is 4.5
-7(-3r+2)=3r-6
Distribute the - 7
21r-14=3r-6
Add 14
21r=3r+8
Subtract 3r
18r=8
Divide 18r by 8
2.25 should be the answer to r.
Let's go:
Big triangle:
12 + 3x - 6 = 3x + 6
10 + 8 = 18
I hope I helped you.
x=6
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