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3 years ago

Jackson gave Lena this expression to evaluate: 14(8 + 12). Lena said that to evaluate the expression was simples

Mathematics

2 answers:

Veseljchak [2.6K]3 years ago

8 0

Answer:

Step-by-step explanation:

Lena's method by prime

= 14 = 7 x 2 = 2/7 Factors or simply just 14 x 20 =280

= 20 = 10 x 2 = 2/10 Factors

= 2 x 2 =4 Cross multiply

= 7 x 10 = 70

Jackson's method by algebra and by adding to the product of 14 and 12

14(8+12)

112+ 160

= 280

Jackson was right in this discussion, as the process within-algebraic shows clarity of the two multiples; being 154 x 8 and 14 x 12, without this we cannot check for mistakes, and we cannot learn from correct answers as often.

krok68 [10]3 years ago

3 0

Answer:

see explanation

Step-by-step explanation:

a) lena's method:

14(8+12)
14(20)=280

jackson's method:

14(8+12)
112+12
124

b) lena is right because when evaluating expressions, you have to follow PEMDAS. parentheses come before multiplication.

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