Question

1)a-15*30=320 2)x-270=1150+630 3)150*20-a=1200

Answer 1

Решено) пожалуйста! :)

Answer 2

1) a - 15 * 30 = 320 To solve this equation, we need to perform the operations in the correct order. First, we multiply 15 by 30, which equals 450. Then, we subtract 450 from both sides of the equation to isolate the variable a.

a - 450 = 320

Next, we add 450 to both sides of the equation to solve for a.

a = 320 + 450 a = 770

So the value of a is 770.

2) x - 270 = 1150 + 630 Similar to the previous equation, we need to isolate the variable x. First, we add 270 to both sides of the equation.

x - 270 + 270 = 1150 + 630 + 270

Simplifying the equation:

x = 1150 + 630 + 270 + 270 x = 2220

The value of x is 2220.

3) 150 * 20 - a = 1200 To solve for a, we need to isolate it on one side of the equation. First, we perform the multiplication.

3000 - a = 1200

Next, we subtract 3000 from both sides of the equation.

3000 - a - 3000 = 1200 - 3000

Simplifying the equation:

-a = -1800

To solve for a, we multiply both sides of the equation by -1 to change the sign of a.

-a * (-1) = -1800 * (-1)

Simplifying:

a = 1800

The value of a is 1800.