Here are the steps to solve the equations:
Solve for x in the equation (x-80)÷40=640(x-80)÷40=64x-80=640*4x-80=2560x=25600+8x=25680
Solve for x in the equation (x-80)×40=640(x-80)×40=64x-80=640÷4x-80=1x=16+8x=96.
Therefore, x=25680 or x=96.
Here are the steps to solve the equations:
Solve for x in the equation (x-80)÷40=640
(x-80)÷40=64
x-80=640*4
x-80=2560
x=25600+8
x=25680
Solve for x in the equation (x-80)×40=640
(x-80)×40=64
x-80=640÷4
x-80=1
x=16+8
x=96.
Therefore, x=25680 or x=96.