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I am Lyosha [343]
3 years ago
11

Solve 15=1.5r+3 check your solution

Mathematics
2 answers:
zheka24 [161]3 years ago
7 0

Answer:

r = 8

Step-by-step explanation:

15 = 1.5r+3

Subtract both sides of the equation by 3.

15-3 = 1.5r+3-3

12 = 1.5r

Divide both sides of the equation by 1.5.

12/1.5=1.5r/1.5

8 = r

r = 8

dmitriy555 [2]3 years ago
3 0

Answer:

8

1.5r + 3 = 15 \\ 1.5r = 15 - 3 \\ 1.5r = 12 \\ r =  \frac{12}{1.5}  \\ r =  \frac{120}{15}   \\ r = 8

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