8x= -10
x= -10/8
x= -5/4
-5x=7
x= -7/5
X= -1 2/5
10x=-3
x= -3/10
64⁻¹32²=(2⁶)⁻¹(2⁵)²=2⁻⁶2¹⁰=2⁻⁶⁺¹⁰=2⁴=16
(6³)²:36⁵=6⁶:(6²)⁵=6⁶:6¹⁰=6⁶⁻¹⁰=6⁻⁴=1/1296
(4⁻³2⁵)/8⁻⁴=2⁻⁶2⁵/2⁻¹²=2⁻⁶⁺⁵⁻⁽⁻¹²⁾=2¹¹=2048
(3⁻³)³3⁷/27²=3⁻⁹3⁷/3⁶=3⁻⁹⁺⁷⁻⁶=3⁻⁸=1/6561
1) (x-y)+y=-3+2x
x=-3+2x
x=3
y=2*3=6
2) (2x-y)+y=-4+3x
2x=-4+3x
x=4
y=3*4=12