Question

8a-3-7=11 7у-19=2у+31

Answer 1

8а=21
а=2целых5/8
5у=50
у=10

Answer 2

Второе уравнение 
7y-19=2y+31
7y-2y=31+19
5y=50
y=50/5
y=10

/ это знак деления

Answer 3

Let's solve the equations step by step:

Equation 1: 8a - 3 - 7 = 11

First, simplify the left side of the equation by combining like terms:

8a - 10 = 11

Next, isolate the variable 'a' by adding 10 to both sides:

8a = 11 + 10 8a = 21

Finally, divide both sides by 8 to solve for 'a':

a = 21/8 a = 2.625

So the solution to Equation 1 is a = 2.625.

Equation 2: 7y - 19 = 2y + 31

First, let's simplify the equation by combining like terms:

7y - 2y = 31 + 19

This gives us:

5y = 50

Next, isolate the variable 'y' by dividing both sides by 5:

y = 50/5 y = 10

So the solution to Equation 2 is y = 10.

Therefore, the solutions to the given equations are a = 2.625 and y = 10.