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3 years ago

How to solve this ?

Mathematics

1 answer:

Serga [27]3 years ago

6 0

-x-3y=-26

6x+3y=21

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3y cancels out.

-x=-26

6x=21

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5x=-5

x=-1

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MATH PLEASE HELP

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2 years ago

Select the correct answer.

adelina 88 [10]

Answer:

$\frac{5}{4} x - 2 = \frac{3}{2} x-4$

Step-by-step explanation:

$\frac{5}{2} x +\frac{7}{2} =\frac{3}{4} x+14 \\\frac{5}{2}x -\frac{3}{4} x=14-\frac{7}{2} \\\frac{10-3}{4} x =\frac{28-7}{2} \\\frac{7}{4} x =\frac{21}{2} \\x = \frac{21}{2} * \frac{4}{7} = 6 \\$

$\frac{5}{4} x -9 = \frac{3}{2} x-12 \\\frac{5}{4} x - \frac{3}{2} x= -12 + 9 \\\frac{5-6}{4} x = -3 \\\frac{-1}{4} x = -3 \\x = -3 * -4 \\x = 12$

$\frac{5}{4} x-2=\frac{3}{2} x-4 \\\frac{5}{4} x-\frac{3}{2} x=-4+2 \\\frac{5-6}{4}x=-2 \\\frac{-1}{4} x = -2 \\x = -2 * -4 \\x = 8$

$\frac{5}{2} x -7 = \frac{3}{4} x+14 \\\frac{5}{2}x -\frac{3}{4} x=14+7 \\\frac{10-3}{4} x =21 \\\frac{7}{4} x =21 \\x = 21 * \frac{4}{7} = 12 \\$

You could also replace x for 8 in every equation and see if both sides give the same answer

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Read 2 more answers

Jackson has a credit card with a 15% interest rate. His dad has a credit card with a 5% interest rate. If they both charge $1,00

alexandr1967 [171]

Jackson's credit card charges 15% interest.
His dad's credit card charges 5% interest.
NOw, they both soend 1000 dollars. Let's find out the difference between their interests.
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Dad of Jackson => 1000 * .05 = 50 dollars.
THus, their difference is about 100 dollars

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2 years ago