Question

-9x-28=44 24-3(a-8)=18 5c-25=45-2c 9a-150/4=-15 2m/5=16/5 -3(a-1)-24=3

Answer 1

Пошаговое объяснение:

-9x-28=44;

-9x=44+28;

-9x=72;

x=-8

24-3(a-8)=18;

24-3a+24=18;

-3a=18-24-24;

-3a=-30;

a=10

Answer 2

Let's solve each equation step by step:

1. -9x - 28 = 44 To solve for x, first, isolate the variable by adding 28 to both sides: -9x = 44 + 28 -9x = 72

Next, divide both sides by -9 to find the value of x: x = 72 / -9 x = -8

2. 24 - 3(a - 8) = 18 Start by distributing the 3 on the left side: 24 - 3a + 24 = 18

Combine like terms: 48 - 3a = 18

Next, isolate the variable by subtracting 48 from both sides: -3a = 18 - 48 -3a = -30

Finally, divide both sides by -3 to find the value of a: a = -30 / -3 a = 10

3. 5c - 25 = 45 - 2c To solve for c, first, move all the c terms to one side of the equation: 5c + 2c = 45 + 25

Combine like terms: 7c = 70

Next, divide both sides by 7 to find the value of c: c = 70 / 7 c = 10

4. 9a - 150/4 = -15 To solve for a, first, add 150/4 to both sides to isolate the variable: 9a = -15 + 150/4

Next, find a common denominator for -15 and 150/4, which is 4: 9a = (-60 + 150) / 4 9a = 90 / 4

Finally, divide both sides by 9 to find the value of a: a = (90 / 4) / 9 a = 90 / 36 a = 2.5

5. 2m / 5 = 16 / 5 To solve for m, simply multiply both sides by 5: 2m = 16

Finally, divide both sides by 2 to find the value of m: m = 16 / 2 m = 8

6. -3(a - 1) - 24 = 3 Start by distributing the -3 on the left side: -3a + 3 - 24 = 3

Combine like terms: -3a - 21 = 3

Next, move the constant term to the right side by adding 21 to both sides: -3a = 3 + 21 -3a = 24

Finally, divide both sides by -3 to find the value of a: a = 24 / -3 a = -8

So, the solutions for the given equations are: x = -8 a = 10 c = 10 a = 2.5 m = 8 a = -8