Question

1. Solve by method of cross multiplication for x and Y

+3= −7 3−=19

2. Solve by method of Elimination, for x and Y

15+ 2=17; 1 + 1= 365

Answer 1

EXPLAINATION

1-To find the solution of a pair of linear equations, we use cross multiplication method. If a1x+b1y+c1=0 and a2x+b2x+c2=0 are two linear equations, then we can find the value of x and y using this method.

ELEMINATION METHOD

Step 1: Multiply each equation by a suitable number so that the two equations have the same leading coefficient.

Step 2: Subtract the second equation from the first.

Step 3: Solve this new equation for y.

Step 4: Substitute y = 2 into either Equation 1 or Equation 2 above and solve for x.

.                            I HOPE IT IS HELPFUL TO YOU                          .

   .                                GIVE ONE CROWN TO ME                        .