Question

7x+3=30x-2x5,4-1,5x=0,3x-3,63(x-2)=x+2(7x+1)-(9x+3)=5

Answer 1

7x+3=30x-2x
7x+3=28x
7х-28х=-3
-21х=-3
х=-3/-21
х=1/7

5,4-1,5x=0,3x-3,6
-1,5x-0,3x=-3,6-5,4
-1,8х=-9
х=5

3(x-2)=x+2
3х-6=х+2
3х-х=2+6
2х=8
х=8:2
х=4

(7x+1)-(9x+3)=5
7х+1-9х-3=5
-2х=5-1+3
-2х=7
х=7:(-2)
х=-3,5

Answer 2

To solve the given equations, let's take them one by one:

1. 7x + 3 = 30x - 2x5 It seems like there is a typo in the equation. I assume you meant 2 * 5 instead of 2x5. Let's rewrite it correctly: 7x + 3 = 30x - 2 * 5

First, let's simplify the equation by multiplying -2 and 5: 7x + 3 = 30x - 10

Now, let's isolate the x terms on one side and the constant terms on the other side: 7x - 30x = -10 - 3 -23x = -13

Finally, solve for x by dividing both sides of the equation by -23: x = (-13) / (-23) x = 13/23

So the solution to this equation is x = 13/23.

2. 4 - 1.5x = 0 To solve this equation, let's isolate the variable term on one side and the constant term on the other side: 4 - 0 = 1.5x 4 = 1.5x

Now, solve for x by dividing both sides of the equation by 1.5: x = 4 / 1.5 x = 8/3 or approximately 2.67

Therefore, the solution to this equation is x = 8/3 or approximately 2.67.

3. 3x - 3.63(x - 2) = x + 2(7x + 1) - (9x + 3) = 5 To solve this equation, let's simplify it step by step:

First, distribute the -3.63 to the terms inside the parentheses: 3x - 3.63x + 7.26 = x + 2(7x + 1) - 9x - 3 = 5

Combine like terms on each side of the equation: -0.63x + 7.26 = x + 14x + 2 - 9x - 3 = 5

Combine like terms further: -0.63x + 7.26 = 6x - 1 = 5

Now, let's simplify each equation separately:

-0.63x + 7.26 = 6x - 1 Add 0.63x to both sides: 7.26 = 6x + 0.63x - 1 Combine like terms: 7.26 = 6.63x - 1 Add 1 to both sides: 7.26 + 1 = 6.63x 8.26 = 6.63x Divide both sides by 6.63: x = 8.26 / 6.63 x ≈ 1.246

Now, let's solve the second equation: 6x - 1 = 5 Add 1 to both sides: 6x = 5 + 1 6x = 6 Divide both sides by 6: x = 6 / 6 x = 1

Therefore, the solutions to the equation are x ≈ 1.246 and x = 1.