Question

А) -4x+5,9=-6,3 б) -2 2/5 *(-3/8x + 1/4)= 4,5 СРОЧНООООООО

Answer 1

4x=-6,3-5,9
4x=-12,2
x=-3,05

Answer 2

Let's solve the given equations step-by-step:

А) -4x + 5.9 = -6.3

Step 1: Let's isolate the variable term (-4x) on one side of the equation. Subtract 5.9 from both sides:

-4x = -6.3 - 5.9

Step 2: Simplify the right side of the equation:

-4x = -12.2

Step 3: Now, let's isolate x by dividing both sides by -4:

x = -12.2 / -4

Step 4: Finally, calculate the value of x:

x = 3.05

So, the solution for equation А) is x = 3.05.

Now, let's move on to equation B:

B) -2 2/5 * (-3/8x + 1/4) = 4.5

Step 1: Distribute the -2 2/5 (or -12/5) to the terms inside the parentheses:

-12/5 * (-3/8x) + (-12/5) * (1/4) = 4.5

Step 2: Simplify the expressions inside the parentheses:

(36/40)x - 3/5 = 4.5

Step 3: To get rid of the fraction, multiply the entire equation by the least common denominator (40):

40 * [(36/40)x - 3/5] = 40 * 4.5

Step 4: Simplify the equation:

36x - 24 = 180

Step 5: Now, isolate the variable term (36x) on one side by adding 24 to both sides:

36x = 180 + 24

Step 6: Simplify the right side:

36x = 204

Step 7: Finally, divide both sides by 36 to find the value of x:

x = 204 / 36

Step 8: Simplify the fraction:

x = 17/3

So, the solution for equation B) is x = 17/3 or x = 5.67 (rounded to two decimal places).

I hope this helps! If you have any further questions or need more assistance, feel free to ask.