a)
3³×5-3³×4=3³×(5-4)=3³×1=3³=27
b)
2³×2²-2³×1= 2³×(2²-1)=2³x(4-1)=2³×3=8x3=24
c)
2³-3×2=2×(2²-3)=2×(4-3)=2×1=2
d)
2⁹⁹ - 2⁹⁸=2⁹⁸(2-1)=2⁹⁸
e)
2⁴x5-2³x3-2²x13=2²x(2²x5-2x3-13)=2²x(20-6-13)=2²x1=2²=4
f)
(7⁶-7⁴):48=7⁴x(7²-1): 2²x7=7⁴x 48 x 1/48=7⁴
g)
(2¹⁴+2¹⁴):2¹⁵=2¹⁴x(1+1)x 1/2¹⁵=2¹⁵x 1/2¹⁵=1