Question #1d80c

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Question #1d80c

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Answer 1 · 2016-09-20T20:45:33

paranthesis first :)

Explanation:

$(7 - 5) \cdot 3 \Rightarrow$ $(7-5)*3 =>$ first $(7 - 5) = 2$ $(7-5) =2$ then multiplication $2 \cdot 3 = 6$ $2*3=6$

$18 - 5 + 3$ $18-5+3$ from left to right $18 - 5 = 13 + 3 = 16$ $18-5 = 13+3 = 16$

$(19 + 4) - \frac{8}{2}$ $(19+4)-8 / 2$ first $(19 + 4)$ $(19+4)$ then $(\frac{8}{2})$ $(8/2)$ and finally subtraction

$23 - \frac{8}{2} = 23 - 4 = 19$ $23 - 8/2 = 23-4 = 19$

Answer 2 · 2016-09-20T21:01:38

$6, 16, 19$ $6, 16, 19$

Explanation:

Count the number of terms in each expression first.

IN each term, do brackets first,
then multiply and divide
last add and subtract

$(7 - 5) \times 3 \leftarrow$ $" "color(red)((7-5)) xx 3" "larr$ all one term. Brackets first
= $2 \times 3$ $" "color(red)(2) xx 3$
= $\times \times 6$ $color(white)(xxxx)6$
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$18 - 5 + 3 \leftarrow$ $18-5 +3" "larr$ there are 3 terms

Work left to right

$= 13 + 3 = 16$ $= 13 +3 = 16$

OR re-arrange the terms with the subtract at the end.

NOTE!! only 5 is being subtracted!! Do not add 5+3!

$18 + 3 - 5 = 16$ $18+3-5 = 16$
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$(9 + 14) - 8 \div 2 \leftarrow$ $color(red)((9+14))color(blue)(-8div2)" "larr$ there are 2 terms - get two answers

= $\times x l 23 - 4$ $color(white)(xxxl)color(red)(23)color(blue)(-4)" "$ do 2 calculations, one in each term.

= $19$ $" "19$
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Question #1d80c

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