Question

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

Answer 1

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.

Answer 2

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.

:)