7x+4y = 39
2x+4y = 14
Subtract the equations in order to eliminate y:
5x = 25
Divide both sides by 5 to find the value of x:
x = 5
Substitute the value of x into the original equations to find the value of y:
Therefore: x = 5 and y = 1
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-2 plus 5 equals +3
It works out that x = 6 and y = 3 or as (6, 3)
you can not solve this equation
If: a = b+c+d Then: c = a-b-d
b = y - mx.