Question

450+а =930-40 Х-340=180+20

Answer 1

Ответ:

1.450+a=890

a=890-450

a=440

2.x-340=200

x=340+200

x=540

Answer 2

450+a = 930-40

450+a = 890

a = 890-450

a = 440

x-340 = 180+20

x-340 = 200

x = 200+340

x = 540

Answer 3

To solve these equations for the variables 'a' and 'x,' you can follow these steps:

1. Solve the first equation for 'a': 450 + a = 930 - 40x

   Subtract 450 from both sides: a = 930 - 40x - 450

   Simplify: a = 480 - 40x

2. Solve the second equation for 'x': 340 - x = 180 + 20

   Subtract 180 from both sides: 340 - x - 180 = 20

   Simplify: 160 - x = 20

   Add 'x' to both sides: 160 - x + x = 20 + x

   Simplify: 160 = 20 + x

   Subtract 20 from both sides: 160 - 20 = 20 - 20 + x

   Simplify: 140 = x

Now you have the solutions: a = 480 - 40x x = 140

You can substitute the value of 'x' (x = 140) into the first equation to find 'a': a = 480 - 40x a = 480 - 40(140) a = 480 - 5600 a = -5120

So, the solution to the system of equations is: a = -5120 x = 140