Answered

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What is the solution for r in the equation?
0.4r-0.13-0.7r=3r-5.74
a. r=2.1
b. r=1.7
c. r=-1.7
d. r=-2.1

Sagot :

Answer:

b

Step-by-step explanation:

given the equation

0.4r - 0.13 - 0.7r = 3r - 5.74 ( simplify left side )

- 0.3 r - 0.13 = 3r - 5.74 ( add 0.3r to both sides )

- 0.13 = 3.3r - 5.74 ( add 5.74 to both sides )

5.61 = 3.3r ( divide both sides by 3.3 )

[tex]\frac{5.61}{3.3}[/tex] = r , then

r = 1.7

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