solve the following simultaneous equations 2x-5y=16 x+y =1
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Answer:
{3,-2}
Step-by-step explanation:
2x-5y=16 ...eq1
x+y=1 ...eq2
2 multiple the 2nd equation
2x+2y=2 ....eq3
subtract the eq 1 and 3
2x-5y=16
-2x-2y=-2
-7y=14
y=14/-7
y=-2
put the value of y=-2 in eq 2
x+y=1
x-2=1
x=1+2
x=3
{3,-2}
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