Question

1) x-48=61+75 2) 287+10•k=1397+300 3) 14158-67223:13+2572?​

Answer 1

1. х-48=61+75

х-48=136

х=184

2.287+10к=1397+300

287+10к=1697

10к=1410

к=141

3. 14 158-67 223:13 + 2572 = 14 158-5171+2572=11559

Answer 2

Let's solve these equations step by step:

1. x - 48 = 61 + 75

First, simplify the right side of the equation:

61 + 75 = 136

Now, the equation becomes:

x - 48 = 136

To solve for x, add 48 to both sides of the equation:

x - 48 + 48 = 136 + 48

x = 184

So, the solution to the first equation is x = 184.

2. 287 + 10 * k = 1397 + 300

First, simplify the right side of the equation:

1397 + 300 = 1697

Now, the equation becomes:

287 + 10 * k = 1697

To solve for k, subtract 287 from both sides of the equation:

287 - 287 + 10 * k = 1697 - 287

10 * k = 1410

Now, to isolate k, divide both sides by 10:

(10 * k) / 10 = 1410 / 10

k = 141

So, the solution to the second equation is k = 141.

3. 14158 - 67223 / 13 + 2572

First, perform the division:

67223 / 13 ≈ 5163.31 (rounded to two decimal places)

Now, substitute this value into the equation:

14158 - 5163.31 + 2572

Next, perform the subtraction:

14158 - 5163.31 = 8994.69

Finally, add 2572 to the result:

8994.69 + 2572 ≈ 11566.69 (rounded to two decimal places)

So, the solution to the third equation is approximately 11566.69.