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Algebra Difficulty 1.1 Junior Find the answer Canada

If $4x+1=13$ , what is the
value of $12x+3$ ?

Pick one

Solution

Solution 1:

Since $4x+1=13$ , then $3\times(4x+1)=3\times13$ , and so $12x+3=39$ .

Solution 2:

Solving $4x+1=13$ , we get $4x=12$ and so $x=3$ . Thus, the value of $12x+3=12(3)+3=39$ .

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Source: CEMC, University of Waterloo, licensed CC-BY-NC-4.0. Statement reproduced verbatim; metadata (topic, difficulty) added by this project.