3/4(4a-2b)
99
3⁴ × 9n+¹÷(3x-¹×9n-¹)
(2x+3)-(3x+5)
(8p-7)-(-10p+5)
10 - 9 \times 5 + 6 \times (-2)
(4x+6)-(x+2)
5.9(15r - 2.6) = 28.1
17 x 32 - 17 x 18 equal ____ x 32
-7 - 7^2
