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ella [17]
3 years ago
6

5m - 3n = 19; m - 6n = -7 /pls. help me solve this linear equation with two variables.

Mathematics
1 answer:
Allisa [31]3 years ago
5 0

Answer:

m = 5, n = 2

Step-by-step explanation:

5m - 3 n = 19\\m - 6n = - 7 \ => m = -7 + 6n\\\\Substitute \ m  \ in \  5m - 3n = 19\\\\5(-7 + 6n) - 3n = 19\\-35 + 30n -3n = 19\\27n = 19 + 35 \\27n = 54 \\n = 2\\\\Substitute \ n = 2 \  in \  m = -7 + 6n\\\\m = -7 + (6 \times 2) = -7 + 12 = 5

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ss7ja [257]

Answer:

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7 0
4 years ago
6.62 X 0.7= 2.68 X 1.35
Kobotan [32]

Answer:

3.934 = 3.634; hope this helps........

Step-by-step explanation:

Solve:

Multiply the numbers

5.62 ⋅ 0.7 = 2.68 ⋅ 1.35

3.934 = 2.68 ⋅ 1.35

Multiply the numbers

3.934 = 2.68 ⋅ 1.35

3.934 = 3.618

Result

3.934 = 3.618

The input is a contradiction: it has no solutions

5 0
3 years ago
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9-2x=7x <br> How do I solve for x?
Olin [163]

Answer:

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Step-by-step explanation:

First add 2x to the 7x it will look like this

9=9x

Now you need x by itself so divide 9 on both sides it will look like this

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3 0
3 years ago
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What is a axe on a graph?
SVEN [57.7K]

Answer:

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Step-by-step explanation:

6 0
3 years ago
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Find the value of x. Write an equation and<br> solve, showing ALL work.<br> 7x-1
ira [324]

Answer:

x = \frac{25}{7}

Step-by-step explanation:

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3 years ago
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