21
18=0.86x - 0.09 Put 18 as the y value and solve for x
18.09=0.86x Add 0.09 on both sides.
21.03=x Then divide on both sides by 086
A + b phrase describe the variable expression y + 8
X=29 and y=10
You would isolate one of the variables and then plug the expression into the other equation to find the value of one variable. Then you would plug this value into the other equation to determine the value of the remaining variable.
<h2>ABC and DEF</h2>
Their 3 angles are equal (64,26,90)
Hope this will help...
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