9x - 2(3x - 7) = 23
-9(d - 2) + 4
-15 -2( -3 - n)
-2(h + 4) + 11 (h - 2)

cтепень 3 и 4, 13 и 10,5 12 и 15
2 3*2 4
3 13 : 3 10
7 5 * 7 12 : 7 15

9x - 2(3x - 7) = 239х-6х+14=233х=9х=9/3=3-9(d - 2) + 4=-9d+18+4=-9d+22 -15 -2( -3 - n)=-15+6+2n=-9+2n -2(h + 4) + 11 (h - 2)=-2h-8+11h-22=9h-30 2^3*2^4=2^(3+4)=2^7=128 3^13 : 3^10 =3^(13-10)=3^3=27 7^5 * 7^12 : 7^15 = 7^(5+12-15)=7^2=49