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Ray Of Light [21]
1 year ago
9

An unknown number b is 10 more than an unknown number k. The number b is also k less than 8. The equations to find k and b are s

hown below.
b=k+10
b=-k+8
Which is a correct step to find k and b?
O Write the points where the graphs of the equations intersect the x-axis.
O Write the points where the graphs of the equations intersect the y-axis.
O Add the equations to eliminate k.
O Multiply the equations to eliminate b.
Mathematics
1 answer:
anygoal [31]1 year ago
3 0

Answer: Add the equations to eliminate k

Step-by-step explanation:

Adding the equations, you get 2b=18, which you can solve for b. Afterward, you can substitute this value of b back into either equation to solve for k.

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Shalnov [3]

Answer:

After simplifying we get (x,y) as (1,3).

Step-by-step explanation:

Given:

x+7y=22,

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Solution;

Let x+7y=22 ⇒ equation 1

Also Let 4x-7y=-17⇒ equation 2

Now by solving the equation we get;

first we will Add equation 2 from equation 1 we get;

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Now Dividing  both side by 5 using division property of equality we get;

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Now Substituting the vale of x in equation 1 we get;

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subtracting both side by 1 using subtraction property of equality we get;

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