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3 years ago

-5 -10=10 I need help urgently!!

Mathematics

2 answers:

stiv31 [10]3 years ago

7 0

Answer:

Step-by-step explanation:

-5 minus -10 = 5

l m a o i used a calculator. Is ur problem even -5 minus -10?

masha68 [24]3 years ago

5 0

Answer: x - 15

It would be x - 15
x - 5 - 10 = x - 15 - x (subtract x from both sides)
(simplify) -5 - 10 = -15
= x - 15 = -15

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Step-by-step explanation:

We are given the system of equations:

$\displaystyle\left \{ {{5x+9y=16} \atop {x+2y=4}} \right.$

We can use elimination to solve this system. We need to multiply the second equation by -5 so we can cancel out our x-terms.

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$\displaystyle\left \{ {{5x+9y=16} \atop {-5x-10y=-20}} \right.$

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