jawab semua dengan benar jangan asal asalan

a. 24 ÷ (-3) - 56 ÷ ( - 8 ) = -8 + 7 = - 1
b. (-15) × 12 ÷ ( -4) - 201 = -15 × ( -3) - 201 = 45 - 201 = - 156
c. 450 ÷ ( -9 ) + (-9) × (-12) = - 50 + 108 = 58