10y = 2y - 6y + 7
10y =-4y + 7
10y +4y = 7
14y = 7
y = 1/2 = .5
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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.