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Find a solution to the equation using the value given for x.
-y = 4x; x = 3.
Q14: <span class="ql-formula" data-value="\left( 18 y ^ {
Q21: <span class="ql-formula" data-value="\frac { x ^ {
Q52: <span class="ql-formula" data-value="\left( x ^ { 2
Q54: <span class="ql-formula" data-value="\frac { 5 } {
Q73: <span class="ql-formula" data-value="\left\{ \begin{array} { l }
Q93: <span class="ql-formula" data-value="\left\{ \begin{array} { l }
Q93: <span class="ql-formula" data-value="( 5 y + 3
Q106: <span class="ql-formula" data-value="\frac { x + 12
Q121: y - 2 = 1; 3<br>A) solution<br>B)
Q125: <span class="ql-formula" data-value="\frac { 1 } {