Select the expression that is equal to {{MATH_1}}. {{CMD_2}} {{CMD_3}}{{MATH_4}}{{CMD_5}} {{CMD_6}}{{MATH_7}}{{CMD_8}} {{CMD_9}}{{MATH_10}}{{CMD_11}} {{CMD_12}}{{MATH_13}}{{CMD_14}} {{CMD_15}}{{MATH_16}}{{CMD_17}} {{CMD_18}}{{MATH_19}}{{CMD_20}} {{CMD_21}}None of the above answers{{CMD_22}} {{CMD_23}}