Evaluate the expression 3a - 2ab if a= 4 and b= 6

explain, you !

3a - 2ab if a= 4 and b= 6 = -36

-7x + 5 = 8x -25 solve for x = 2

Step-by-step explanation:

Evaluate 3 a - 2 a b where a = 4 and b = 6:

3 a - 2 a b = 3×4 - 2×4×6

3×4 = 12:

12 - 2×4×6

-2×4 = -8:

-8×6 + 12

-8×6 = -48:

-48 + 12

12 - 48 = -(48 - 12):

-(48 - 12)

| 4 | 8

- | 1 | 2

| 3 | 6:

-36

Solve for x:

5 - 7 x = 8 x - 25

Subtract 8 x from both sides:

5 + (-7 x - 8 x) = (8 x - 8 x) - 25

-7 x - 8 x = -15 x:

-15 x + 5 = (8 x - 8 x) - 25

8 x - 8 x = 0:

5 - 15 x = -25

Subtract 5 from both sides:

(5 - 5) - 15 x = -5 - 25

5 - 5 = 0:

-15 x = -5 - 25

-5 - 25 = -30:

-15 x = -30

Divide both sides of -15 x = -30 by -15:

(-15 x)/(-15) = (-30)/(-15)

(-15)/(-15) = 1:

x = (-30)/(-15)

The gcd of -30 and -15 is -15, so (-30)/(-15) = (-15×2)/(-15×1) = (-15)/(-15)×2 = 2:

x = 2

the amount you'd have after the work is $1.55

step-by-step explanation:

you subtract 95% from $31.

3< x< 5

step-by-step explanation:

|x - 4| < 1

there are two solutions, one positive and one negative.   remember to flip the inequality when taking the negative solution

x-4 < 1       x-4 > -1

add 4 to each side

x-4+4 < 1+4       x-4+4 > -1+4

x< 5                 x> 3

3< x< 5