6 - 4x = 7x - 9x + 12

x=-3

Step-by-step explanation:

Combine like terms

6 + -4x = 7x + -9x + 12

Reorder the terms:

6 + -4x = 12 + 7x + -9x

Combine like terms: 7x + -9x = -2x

6 + -4x = 12 + -2x

6 + -4x = 12 + -2x

Add '2x' to each side of the equation.

6 + -4x + 2x = 12 + -2x + 2x

Combine like terms: -4x + 2x = -2x

6 + -2x = 12 + -2x + 2x

Combine like terms: -2x + 2x = 0

6 + -2x = 12 + 0

6 + -2x = 12

Add '-6' to each side of the equation.

6 + -6 + -2x = 12 + -6

Combine like terms: 6 + -6 = 0

0 + -2x = 12 + -6

-2x = 12 + -6

Combine like terms: 12 + -6 = 6

-2x = 6

Divide each side by '-2'.

x = -3

Simplifying

x = -3

3x + 18 = 147°

step-by-step explanation:

3x + 18 = 147°, because the value of the central angle is equal to the value of the arc formed by it.

i hope i you.

answer: h=5.6 i don't really know how to put into words, so i though i would let you do that. i hope i was able to some

step-by-step explanation:

18 = 6(h)+1/2

18 = 6h+1/2

18-1 = 6h/2

17 = 3h

17/3 = h

h = 5.6