find value of the letter in each of the following and give reason for the step involved ab + ba = 55
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Answer:
23+32 = 55
Step-by-step explanation:
since multiplication is commutative
55 = 11(5)
= 11(2+3)
since 11(1+4) = 11+44. which is not equal to ab + ba. but 11(2+3) = (10+1)(2+3)= 20+2+ 30+3
20+3+30+2
2(10)+3. + 3(10)+2
(10)a+ b + b(10)+a
therefore 23+32 is the answer. a equals 2 b equals 3
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