Question

12 +4*(3x)-(5x+6) при х=3/4 решить уравнение

Answer 1

Объяснение:

12+4*(3x)-(5x+6)

12+4*3x-5x-6

12+12x-5x-6

6+7x

Answer 2

To solve the equation, we need to substitute the value of x (x = 3/4) into the expression and then simplify it step by step.

Given expression: 12 + 4*(3x) - (5x + 6)

Step 1: Substitute x with 3/4: 12 + 4*(3*(3/4)) - (5*(3/4) + 6)

Step 2: Simplify the expression inside the parentheses: 12 + 4*(9/4) - (15/4 + 6)

Step 3: Perform the multiplication and addition inside the parentheses: 12 + 9 - (15/4 + 24/4)

Step 4: Combine the fractions inside the parentheses: 12 + 9 - (39/4)

Step 5: Find a common denominator for subtraction: 12 + 9 - (39/4) = 12 + 9 - (39/4 * 4/4) = 12 + 9 - (39/16)

Step 6: Perform the subtraction inside the parentheses: 12 + 9 - (39/16) = 12 + 9 - 39/16

Step 7: Now, find a common denominator for the addition: 12 + 9 - 39/16 = 192/16 + 144/16 - 39/16

Step 8: Perform the addition: 192/16 + 144/16 - 39/16 = (192 + 144 - 39)/16 = 297/16

So, when x = 3/4, the value of the expression is 297/16.