(7) -50 -12 18× (-4) x - 7/1/2 8 3 4×(+3)²-32÷(-2) ³ =4×9-32÷-8 --- =- L 40 -24÷{(-3)²-(8-11)} =-24:12 =-2 12/2×(-12)-(-3) ÷ 12 -X- 20 3 7910931 1 2 (4)-2²÷(-1)³x(-3) >-4÷-1X-3 3 = ---12 (6(-4)²-4²x3 = 16-16x3 =32-32 (8) 16-(9-13) × (-7) 16+4x-7 =-12 Cop (10) - 1.4 + =-1₁4-² 14 一般・ 15 lo ¹) (-3) 33