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Chapter 2: Q27. (page 108)

Solve the equation using mental math.

36=-4a

Short Answer

Expert verified

Value of given equation is a=-9.

Step by step solution

01

Step-1- Think provided equation as question in words

36=-4a

The question will be as:

What number need to multiply with -4 so that it becomes 36?

Hence answer for above question is -9.

02

Step-2- Checking our answer is correct or not 

Substitute a=9in given equation 36=-4a.

36=-4a36=-4(-9)36=36

03

Step-3- Conclusion

Therefore, as both sides of above expression are same, the value of given equation is a=-9.

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