sharon17 sharon17

14-09-2016
Mathematics

contestada

Solve the equations 3+9(1-5r)=25

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Amphitrite1040 Amphitrite1040

14-09-2016

Rearrange ➡ 3 + 9 × (1 - 5r) - (25)

Step 1. Equation ⬇

(3+9 × (1 - 5r )):- 25 = 0

Step 2. Take out the like terms (factors) ⬇

-45r - 13 = -1 × (45 + 13 )

Equation part 2 ➡ -45 - 13 = 0

Add 13 to both sides of the equation ➡ -45=13

Multiply both sides of the equation by (-1 ) : 45r= -13

divide both sides of the equation by 45

r= -0.289

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