Question

1)6.7x+3x+63.5=5002)(2.1-0.7x):0.48=3.5Помогите пожалуйста

Answer 1

1)6.7x+3x+63.5=500
9,7x=500-63,5
9,7x=436,5
x=436,5:9,7
x=45
2)(2.1-0.7x):0.48=3.5 /*0,48
2,1-0,7x=1,68
-0,7x=1.68-2,1
-0,7x=-0,42
x=-0,42:(-0,7)
x=0,6

Answer 2

1) To solve the equation 6.7x + 3x + 63.5 = 500, we can combine like terms on the left side of the equation. Adding 6.7x and 3x gives us 9.7x. So the equation becomes 9.7x + 63.5 = 500.

Next, we can isolate the variable x by subtracting 63.5 from both sides of the equation. This gives us 9.7x = 500 - 63.5, which simplifies to 9.7x = 436.5.

To solve for x, we divide both sides of the equation by 9.7. This gives us x = 436.5 / 9.7, which simplifies to x ≈ 45.05.

Therefore, the solution to the equation 6.7x + 3x + 63.5 = 500 is x ≈ 45.05.

2) To solve the equation (2.1 - 0.7x) / 0.48 = 3.5, we can start by multiplying both sides of the equation by 0.48 to eliminate the denominator. This gives us 2.1 - 0.7x = 3.5 * 0.48.

Simplifying the right side of the equation, we have 2.1 - 0.7x = 1.68.

Next, we can isolate the variable x by subtracting 2.1 from both sides of the equation. This gives us -0.7x = 1.68 - 2.1, which simplifies to -0.7x = -0.42.

To solve for x, we divide both sides of the equation by -0.7. However, when dividing by a negative number, we need to remember to reverse the inequality sign. So we have x = -0.42 / -0.7, which simplifies to x ≈ 0.6.

Therefore, the solution to the equation (2.1 - 0.7x) / 0.48 = 3.5 is x ≈ 0.6.

I hope this helps! Let me know if you have any further questions.