Teo Wei Zhen (Jemane)'s answer to Justus Tan's Secondary 2 Maths question.

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Teo Wei Zhen (Jemane)
Teo Wei Zhen (jemane)'s answer
2 answers (Tutor Details)
Q5. To check if x=5.5 is a solution of 5x+12=20, you just have to substitute x=5.5 into the equation and check if the end answer is correct.

Q6. As the two numbers are consecutive, the difference of the two numbers is 1. By dividing 30 (from 31-1) by 2, you get the first number of the 2 numbers.