Question

0.4(у-9)=0.3(2+у)+0.7

Answer 1

Відповідь:

49

Покрокове пояснення:

0.4(х-9)=0.7+0.3(х+2)0.4х-3.6=0.7+0.3х+0.60.4x-0.3x=1.3 +3.60.1x =4.9x=49

Answer 2

Ответ:

y=49

Пошаговое объяснение:

0.4(у-9)=0.3(2+у)+0.7

0.4y-3.6=0.6+0.3y+0.7

0.4y-0.3y=0.6+0.7+3.6

0.1y=4.9

y=4.9:0.1

y=49

Answer 3

To solve the equation 0.4(y - 9) = 0.3(2 + y) + 0.7, we can follow these steps:

1. Distribute the multiplication on both sides of the equation: 0.4y - 0.4(9) = 0.3(2) + 0.3y + 0.7

2. Simplify the expressions: 0.4y - 3.6 = 0.6 + 0.3y + 0.7

3. Combine like terms: 0.4y - 3.6 = 0.3y + 1.3

4. Move all the terms with y to one side of the equation and the constant terms to the other side: 0.4y - 0.3y = 1.3 + 3.6

   Simplifying further: 0.1y = 4.9

5. Solve for y by dividing both sides of the equation by 0.1: y = 4.9 / 0.1

   Calculating the result: y = 49

Therefore, the solution to the equation 0.4(y - 9) = 0.3(2 + y) + 0.7 is y = 49.