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Determine the simplified value of the expression: 12 × 15 - 20 + 15 + 12 - 18 + 3 × 4 + 18.

(-251 × 21 × -12) ÷ ? = 158.13

Simplify: (2³×3²) ÷6

(106 + 14)/15 = ?/5

If (3 × 144 – 252 ÷ 14) ÷ 18 = √1024 – x, then find the value of ‘x’.

What will come in the place of question mark (?) in the given expression?

?% of 2480 + 15 × 34 = 1440

√144 × √121 + 25% of 600 = ? + 256

Find the simplified value of the given expression.

(1/4) of {6⁴ - 28 x 15 + 13 x 16 - 12.5 of 12²}

2945 – 1508 + 3454 = ? + 2255