문자와 식 전체 문제

In the following exercises, simplify using the order of operations.

ⓐ $2+6\cdot 3$ ⓑ $(2+6)\cdot 3$

In the following exercises, simplify using the order of operations.

${2}^{3}-12\div (9-5)$

In the following exercises, simplify using the order of operations.

${3}^{2}-18\div (11-5)$

In the following exercises, simplify using the order of operations.

$3\cdot 8+5\cdot 2$

In the following exercises, simplify using the order of operations.

$4\cdot 7+3\cdot 5$

In the following exercises, simplify using the order of operations.

$2+8(6+1)$

In the following exercises, simplify using the order of operations.

$4+6(3+6)$

In the following exercises, simplify using the order of operations.

$4\cdot 12/8$

In the following exercises, simplify using the order of operations.

$2\cdot 36/6$

In the following exercises, simplify using the order of operations.

$(6+10)\div (2+2)$

In the following exercises, simplify using the order of operations.

$(9+12)\div (3+4)$

In the following exercises, simplify using the order of operations.

$20\div 4+6\cdot 5$

In the following exercises, simplify using the order of operations.

$33\div 3+8\cdot 2$

In the following exercises, simplify using the order of operations.

${3}^{2}+{7}^{2}$

In the following exercises, simplify using the order of operations.

${(3+7)}^{2}$

In the following exercises, simplify using the order of operations.

$3(1+9\cdot 6)-{4}^{2}$

In the following exercises, simplify using the order of operations.

$5(2+8\cdot 4)-{7}^{2}$

In the following exercises, simplify using the order of operations.

$2[1+3(10-2)]$

In the following exercises, simplify using the order of operations.

$5[2+4(3-2)]$

Evaluate an Expression

In the following exercises, evaluate the following expressions.

$7x+8$ when $x=2$