Answer: 2
Step-by-step explanation:
<em>1) substitute</em>
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<em>2) calculate the difference before the absolute value</em>
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<em>3) calculate the absolute value </em>
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<em>4) convert into whole numbers/reduce </em>
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<em>5) subtract the whole numbers</em>
this is what i think might be wrong
Answer:
- r1 +4×r3 ⇒ r1
- r2 -3×r3 ⇒ r2
Step-by-step explanation:
We note that the coefficient of y in equation (iii) is 1, so it is convenient to use that equation to eliminate y from the others.
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<em>To eliminate the y-variable from equation (i), four times equation (iii) can be added to equation (i).</em>
<em>To eliminate the y-variable from equation (ii), three times equation (iii) can be subtracted from equation (i).</em>
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The result of these operations would be ...

I believe the answer is A.
Absolute value best proves my answer.
Absolute value is how far a number is from zero.