Answer:
x=45/6
Step-by-step explanation:
2+7y=8. 7y=8-2. <u>7</u><u>y</u><u>=</u><u>6</u>
7=7. y=6\7
insert the value of y in the second equation. 5x-7y=16
5x-7(6/7)=16
5x-49\6=16
collect the liketerms together
5x=16+49/6
5x=145/6(divide both sides by 5)
x=29/6
x=45/6
<em><u>f</u></em><em><u>u</u></em><em><u>r</u></em><em><u>t</u></em><em><u>h</u></em><em><u>e</u></em><em><u>r</u></em><em><u>.</u></em>
<em><u> </u></em>confirm if the 2 in the second equation has an X coz the questions are normally set with both equations having both values x and y
Answer:-1/9,1/27,-1/81
Step-by-step explanation:
We are dividing by -3 each time.
3/-3=-1
-1/-3=1/3
1/3÷-3=-1/9
-1/9÷-3=1/27
1/27÷-3=-1/81
Answer:
multiple each side by x - 1
2 = -4(x-1)
2 = -4x + 4
-2 = -4x
x = 1/2