Squaring both sides of an equation is irreversible. Is cubing both sides of an equation reversible?

Step-by-step explanation:

Well first,

Squaring both sides of an equation is irreversible is not true

You can just put the square root sign () to reverse it...

Same with cubes, as you can just put the cubed root sign () to reverse it...

x > 1.3

step by step:

8.5−0.9x> 9.8−1.9x

step 1: simplify both sides of the inequality.

−0.9x+8.5> −1.9x+9.8

step 2: add 1.9x to both sides.

−0.9x+8.5+1.9x> −1.9x+9.8+1.9x

1x+8.5> 9.8

step 3: subtract 8.5 from both sides.

1x+8.5−8.5> 9.8−8.5

1x> 1.3

step 4: divide both sides by 1.

1x/1 > 1.3/1

47 - 90 = 43

43 - 180 = x

x = 137