I dont need answers just an explaination how to solve these will give brailiest

Step-by-step explanation:

first you have to take all similar variable on the same side of the equation and the constants on the other side then solve the question .

example : -12x + 9 = -15x

-12x +15x = -9

3 x = -3

X = -3/3= -1

x = -1

like this you can solve all the other equation ..

Hope this will be helpful to you ..

plz mark my answer as brainlist if you find it useful..

a)-3

b)2

c)27

you subtract 9 from both sides

-12x+9-9=-15-9

simplify=-12x=-15x-9

add 15x to both sides=-12x+15x=-15x-9+15x

Simplify=3x=-9

divide both sides by 3

3x/3=-9/3

x=-3

b)Step 1: Subtract 8.5x from both sides.

4.5x+11.5−8.5x=8.5x+3.5−8.5x

−4x+11.5=3.5

Step 2: Subtract 11.5 from both sides.

−4x+11.5−11.5=3.5−11.5

−4x=−8

Step 3: Divide both sides by -4.

−4x/−4=−8/−4

x=2

x=2

Step 1: Subtract 1/3x from both sides.

2/3x−9=1/3x

2/3x-9-1/3x=1/3x-1/3x

1/3-9=0

Step 2: Add 9 to both sides.

1/3x-9+9=0+9

1/3x=9

Step 3: Multiply both sides by 3.

3*(1/3x)=(3)*(9)

x=27

hope that was useful would appreciate a brainliest  if it helps you

first anwser choice.

step-by-step explanation:

the greater/less or equal to symbol (> or < with the line at the bottom) is a closed/filled in circle.

-5c + 2 _< _27

subtract from both sides by 2

-5c _< _ 27

divide both sides by -5

c _< _ 5.4

flip the inequality sign

c _> _5.4

the only possible answer that would match the simplified inequality is the first answer choice

step-by-step explanation:

two pairs of adjacent sides are of equal length. this implies that one diagonal divides the kite into congruent triangles, and so the angles between the two pairs of equal sides are equal in measure. it also implies that the diagonals are perpendicular.