Question

7×х-18=3 У: ( 48 - 39) =36:6

Answer 1

$7x - 18 = 3 \\ 7x = 3 + 18 \\ 7x = 21 \\ x = 3$

$y \div (48 - 39) = 36 \div 6 \\ y \div 9 = 6 \\ y = 6 \times 9 \\ y = 54$

Answer 2

To solve the equation 7x - 18 = 3, we can follow these steps:

Step 1: Add 18 to both sides of the equation to isolate the term with x: 7x - 18 + 18 = 3 + 18 7x = 21

Step 2: Divide both sides of the equation by 7 to solve for x: 7x/7 = 21/7 x = 3

Therefore, the solution to the equation 7x - 18 = 3 is x = 3.

Now let's solve the expression (48 - 39) = 36/6:

Step 1: Evaluate the subtraction inside the parentheses: 48 - 39 = 9

Step 2: Divide 36 by 6: 36/6 = 6

Therefore, the expression (48 - 39) = 36/6 simplifies to 9 = 6.