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How do you solve for x in #4+x=k#?

Answer 1

#x=k-4#

In this type of equation called a #color(blue)"literal equation"# since it has a combination of numbers and letters, we treat the k as a numeric value.

To isolate x on the left of the equation, subtract 4 from both sides.

#cancel(4)cancel(-4)+x=k-4#

#rArrx=k-4" is the solution"#

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Answer 2

Eli Assouline

To solve for ( x ) in the equation ( 4 + x = k ), you need to isolate ( x ) on one side of the equation. Subtract 4 from both sides to move the constant term to the other side of the equation. This gives you ( x = k - 4 ).

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Answer from HIX Tutor

When evaluating a one-sided limit, you need to be careful when a quantity is approaching zero since its sign is different depending on which way it is approaching zero from. Let us look at some examples.