Question

1,5х-1,2у+18=0 ; 0,7-1,8у+14,6=0 решить линейное уравнение

Answer 1

Ответ:

1.5х-1.2у+18=0

1.5х=1.2у-18

х=0.8у-12

Ответ: х=0.8у-12

0.7-1,8y+14,6=0

15.3-1.8y=0

-1.8y=-15.3

y=8,5

Ответ: y=8.5

Пошаговое объяснение:

Answer 2

To solve the system of linear equations, we have:

1. 1.5x - 1.2y + 18 = 0
2. 0.7 - 1.8y + 14.6 = 0

We can use the method of substitution or elimination to find the values of x and y.

Let's use the elimination method:

Step 1: Multiply both sides of the second equation by 10 to eliminate the decimals:

2. 10(0.7 - 1.8y + 14.6) = 0 7 - 18y + 146 = 0 -18y + 153 = 0 -18y = -153 y = -153 / -18 y = 8.5

Step 2: Now that we have the value of y, we can substitute it back into either equation to find the value of x. Let's use the first equation:

1. 1.5x - 1.2(8.5) + 18 = 0 1.5x - 10.2 + 18 = 0 1.5x + 7.8 = 0 1.5x = -7.8 x = -7.8 / 1.5 x = -5.2

So, the solution to the system of equations is x = -5.2 and y = 8.5.