How do you simplify $3 + (21 \div 7) \times 8 \div 4$ $3+(21div7)times 8div 4$ ?

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Answer 1 · 2017-04-23T20:01:10

$3 + 6 = 9$ $3+6=9$

There are 2 terms. You have to simplify the second term to a final answer before adding it to $3$ $3$ .

$3 + (21 \div 7) \times 8 \div 4$ $3+color(red)((21div7))xx8div4$

You have to calculate the parentheses first!

$= 3 + 3 \times 8 \div 4$ $= 3+color(red)(3)xx8div4$

Multiplication and division have the same priority, so it does not matter which is done first. This can be written as:

$3 + \frac{3 \times 8}{4} = 3 + \frac{24}{4} = 3 + 6 = 9$ $3+ color(blue)((3xx8)/4 = color(black)(3+)24/4 = color(black)(3)+6 = 9)$

OR

$3+color(green)( (3xx8)/4 = color(black)(3+) (3xxcancel8^2)/cancel4 = color(black)(3+)6 = 9)$

How do you simplify 3+(21div7)times 8div 43+(21÷7)×8÷43+(21div7)times 8div 4?