The student who solved the equation made an error(s). Explain the error(s). State the correct solution. (90−x)+2x+x=180
90−4x=180
4x=270
x=67.5

the negative sign before X in the bracket isn't supposed to affect the ones after the bracket

Step-by-step explanation:

(90 - x) + 2x + x = 180

90 - x + 2x + x = 180

90 + 2x = 180

sub. 90 from both sides

2x = 90

x = 45

step-by-step explanation:

a cube has 6 sides

the probability of getting 5 on the first cube is 1/6 since only one side of the cube has 5 on it.

there are 3 sides of the cube with even number on it [2,4,6]

therefore the probability of getting even number is 3/6

for both events to happen together, the probability would be

1/6 x 3/6 = 12/36

which simplifies to 1/12