Question

3) (2x+x+9 +8x) : 4 - 26 = 45;4) 52- (3y +4+ 2y +3y) : 38 = 50.​

Answer 1

Ответ:

3) (2x+x+9+8x)÷4-26=45

(11x+9)÷4-26=45

11x+9/4-26=45

11x+9-104=180

11x-95=180

11x=180+95

11x=275

x=25

4) 52-(3y+4+2y+3y)÷38=50

52-(8y+4)÷38=50

52-8y+4/38=50

52-2(4y+2)/38=50

52-4y+2/19=50

988-(4y+2)=950

988-4y-2=950

986-4y=950

-4y=950-986

-4y=-36

y=9

Удачи!

Answer 2

To solve the equations, let's simplify them step by step:

3. (2x + x + 9 + 8x) ÷ 4 - 26 = 45

Combining like terms within the parentheses: (2x + x + 9 + 8x) ÷ 4 - 26 = 45 (11x + 9) ÷ 4 - 26 = 45

Now let's simplify further by applying the division first: (11x + 9) ÷ 4 - 26 = 45 (11x + 9) ÷ 4 = 45 + 26 (11x + 9) ÷ 4 = 71

To isolate (11x + 9), multiply both sides of the equation by 4: 4 * (11x + 9) ÷ 4 = 71 * 4 11x + 9 = 284

Next, subtract 9 from both sides: 11x + 9 - 9 = 284 - 9 11x = 275

Finally, divide both sides by 11 to solve for x: 11x ÷ 11 = 275 ÷ 11 x = 25

Therefore, the solution to the equation is x = 25.

4. 52 - (3y + 4 + 2y + 3y) ÷ 38 = 50

Combining like terms within the parentheses: 52 - (3y + 4 + 2y + 3y) ÷ 38 = 50 52 - (8y + 4) ÷ 38 = 50

Now let's simplify further by applying the division: 52 - (8y + 4) ÷ 38 = 50 52 - (8y + 4) = 50 * 38

To remove the parentheses, distribute the negative sign: 52 - 8y - 4 = 1900

Combine like terms: 52 - 4 - 8y = 1900 48 - 8y = 1900

Next, subtract 48 from both sides: 48 - 48 - 8y = 1900 - 48 -8y = 1852

Finally, divide both sides by -8 to solve for y: -8y ÷ -8 = 1852 ÷ -8 y = -231.5

Therefore, the solution to the equation is y = -231.5.