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5x+y=18 I ×-2
3x + 2y =1
-10x-2y=-36
b. 4x+8y= 4 I÷4
0,1x-0,3y=0,6 I×-10
x + 2 y = 1
-x+ 3y=-6
5x+y=18/*(-2)
3x+2y=1
-10x-2y=-36
b)4x+8y=4/4
0,1x-0,3y=0,6/*(-10)
x+2y=1
-x+3y=-6
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