10y = 2y - 6y + 7
10y =-4y + 7
10y +4y = 7
14y = 7
y = 1/2 = .5
X=7 y=5
18 + 70 ie 87
Multiply the first by 8 and the second by 3
Multiply all terms in the second equation by 5: 11x+10y = 147 0x+10y = 70 Subtract the second equation from the first equation in order to eliminate y: 11x = 77 Divde both sides by 11 in order to find the value of x: x = 7 Substitute the value of x into the original equations to find the value of y: Therefore it follows that x = 7 and y = 7
It equals 24.
X=7 y=5
18 + 70 ie 87
Multiply the first by 8 and the second by 3
Multiply all terms in the second equation by 5: 11x+10y = 147 0x+10y = 70 Subtract the second equation from the first equation in order to eliminate y: 11x = 77 Divde both sides by 11 in order to find the value of x: x = 7 Substitute the value of x into the original equations to find the value of y: Therefore it follows that x = 7 and y = 7
12x-5y+3 = 0 => y = 2.4x+0.6 24x-10y-7 => y = 2.4x-0.292 rounded to 3 d.p. Both lines have the same slope but different y intercepts therefore they are parallel to each other.
It equals 24.
96
It doesn't ! -7 plus -5 equals -12 ! -7 plus 5 equals -2
89
If I am correct, 9 plus 7 equals 112.
35
28