Question

2. PiBHAHHAa) 12-7 = 3 - xб) х/16=3/8в) | - x = 1 - 1г)5-х/6=4/9​

Answer 1

Ответ:

a) 12-7=3-x

5=3-x

x=3-5

x=-2

б) х:16=3:8

8*х=16*3

8*х=48

х=6

в) 1-х=1-1

1-х=0

х=1

г) 5-(х:6)=4:9

х:6=5-(4:9)

х=6*(5-(4:9))

х=30-(8:3)

Answer 2

Let's solve each of these equations step by step:

a) 12 - 7 = 3 - x

First, simplify both sides of the equation:

5 = 3 - x

Now, isolate x by moving 3 to the other side of the equation:

5 - 3 = -x

2 = -x

To solve for x, multiply both sides by -1:

x = -2

b) x/16 = 3/8

To isolate x, multiply both sides of the equation by 16:

16 * (x/16) = 16 * (3/8)

x = 6

c) | -x | = 1 - 1

This equation has two cases, one for when -x is positive and one for when it is negative:

Case 1 (when -x is positive): -x = 1 - 1

-x = 0

To solve for x, multiply both sides by -1:

x = 0

Case 2 (when -x is negative): -x = -1 + 1

-x = 0

Again, multiply both sides by -1:

x = 0

So, in both cases, the solution is x = 0.

d) 5 - x/6 = 4/9

First, subtract 5 from both sides of the equation:

5 - 5 - x/6 = 4/9 - 5

-x/6 = 4/9 - 45/9

-x/6 = -41/9

Now, multiply both sides by -6 to isolate x:

-6 * (-x/6) = -41/9 * (-6)

x = (246/9)

Simplify the fraction:

x = 82/3

So, the solution is x = 82/3.