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NARA [144]
3 years ago
10

Please solve the equation (15m + 3)/2 = -6

Mathematics
2 answers:
stiv31 [10]3 years ago
6 0

Answer:

m = - 1

Step-by-step explanation:

Given

\frac{15m+3}{2} = - 6

Multiply both sides by 2 to clear the fraction

15m + 3 = - 12 ( subtract 3 from both sides )

15m = - 15 ( divide both sides by 15 )

m = - 1

Arada [10]3 years ago
5 0

\text{Solve:}\\\\\frac{15m+3}{2}=-6\\\\\text{Multiply both sides by 2}\\\\15m+3=-12\\\\\text{Subtract 3 from both sides}\\\\15m=-15\\\\\text{Divide both sides by 15}\\\\\boxed{m=-1}

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Read 2 more answers
Solve by using elimination 7) -6x – 8y = -30<br>4x + 2y = 20​
anzhelika [568]

Answer:

x = 5 , y = 0

Step-by-step explanation by elimination:

Solve the following system:

{-6 x - 8 y = -30 | (equation 1)

4 x + 2 y = 20 | (equation 2)

Add 2/3 × (equation 1) to equation 2:

{-(6 x) - 8 y = -30 | (equation 1)

0 x - (10 y)/3 = 0 | (equation 2)

Divide equation 1 by -2:

{3 x + 4 y = 15 | (equation 1)

0 x - (10 y)/3 = 0 | (equation 2)

Multiply equation 2 by 3/10:

{3 x + 4 y = 15 | (equation 1)

0 x - y = 0 | (equation 2)

Multiply equation 2 by -1:

{3 x + 4 y = 15 | (equation 1)

0 x+y = 0 | (equation 2)

Subtract 4 × (equation 2) from equation 1:

{3 x+0 y = 15 | (equation 1)

0 x+y = 0 | (equation 2)

Divide equation 1 by 3:

{x+0 y = 5 | (equation 1)

0 x+y = 0 | (equation 2)

Collect results:

Answer:  {x = 5 , y = 0

4 0
4 years ago
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