Multiply the 2nd row by 9 <span>9x+9y=117</span> <span><span><span>9x+27y=207
</span></span></span>Subtract the 2nd row from the 1st row <span><span><span>−18y=−90 </span></span></span>Divide both sides by <span>−18</span> <span><span><span>y=<span><span>−90/</span><span>−18 </span></span></span></span>Two negatives make a positive <span><span>y=<span><span>90/</span><span>18</span></span></span><span></span></span><span> y = 5
Substitute 5 into an equation 9x+9(5)=11<span>7 </span>9x+45=11<span>7 </span>Subtract <span>45</span> from both sides <span><span><span>9x=117−45
</span></span></span>9x=7<span>2 </span>Divide both sides by <span><span>9</span></span> x = ___
