Question

Simplify the numerical expression given below.
$2\times \left[\right\{(64+16)÷5+26\}+3]$

• A. $90$
• B. $87$
• C. $78$
• D. $55$

Answer 1

The correct option is A $90$

$2\times \left[\right\{\left(\underset{–}{64+16}\right)÷5+26\}+3]\Rightarrow$ Simplify the terms in the innermost parentheses first, as per the order of operations, MDAS.
$=2\times \left[\right\{\underset{–}{80÷5}+26\}+3]\Rightarrow$ Simplify the terms in the innermost curly braces next, as per the order of operations, MDAS.
$=2\times \left[\right\{\underset{–}{16+26}\}+3]$
$=2\times \left[\underset{–}{42+3}\right]\Rightarrow$ Simplify the terms in the innermost square brackets next, as per the order of operations, MDAS.
$=\underset{–}{2\times 45}$
$=90$