Question

0,7 (x + 7) = 0,4 (x - 3) + 7

Answer 1

0,7 (x + 7) = 0,4 (x - 3) + 7

0.7x+4.9=0.4x-1.2+7

0.7x-0.4x=7-4.9-1.2

0.3x=0.9⇒x=0.9/0.3⇒x=3

Answer 2

To solve the given equation, we'll need to isolate the variable x. Let's break down the steps:

0.7(x + 7) = 0.4(x - 3) + 7

Distribute the constants on the left and right sides of the equation:

0.7x + 4.9 = 0.4x - 1.2 + 7

Combine like terms on the right side:

0.7x + 4.9 = 0.4x + 5.8

Subtract 0.4x from both sides to isolate the x terms on one side:

0.7x - 0.4x + 4.9 = 5.8

0.3x + 4.9 = 5.8

Subtract 4.9 from both sides:

0.3x = 0.9

Now, divide both sides by 0.3 to solve for x:

x = 0.9 / 0.3

x = 3

So, the solution to the equation is x = 3.