Question

M What is the value of y in the system of equations shown below? X-10=0 3x + 5y = 20 ح​

Answer 1

y= -2

Step-by-step explanation: x-10=0 move the - 10 to the other side it will be +10 s0 x=10

then use that value to solve the second equation

3*10 +5y=20

30 +5y=20

remember: anything that moves to the other side of the equation always invert its sign so +30 will be -30

5y= 20-30

5y= -10

y= -10/5

y= -2