Question

Can anyone help me I was self isolating when my class was taught this and I can't get in contact with my teacher

Answer 1

1. x=3 y=2 ---- 2. x=5 y=1 ---- 3. x=2 y=4 ---- 4. x=3 y=2 ---- 5. x=5 y=1 ---- 6. x=5 y=5

Explanation:

1. 3x3=9, 2x2=4, 9+4=13

2. 2x5=10, 5x1=5, 10+5=15

3. 4x2=8, 2x4=8, 8+8=16

4. 3+(2x2)=7

5. 3x5=15, 10x1=10, 15-10=5

6. 3x5=15, 3x5=15, 15+15=30

I hope this helps, I'm so sorry if it's wrong

Answer 2

Explanation:

3x +2y = 13 -----------------(i)

x + 2y = 7 ----------------(ii)

Multiply the equation (ii) by (-1) and then add.

(i) 3x + 2y = 13

(ii)*(-1) -x - 2y = -7 {Now, add and y will be eliminated}

2x = 6

x = 6/2

x = 3

Plug in x = 3 in equation (i)

3*3 + 2y = 13

9 + 2y = 13

2y= 13 - 9

2y = 4

y = 4/2

y = 2