1.) 3x+5 ; x= 2
=3(2)+5
=6+5
=11
2.) 5xy+x-4 ; x=-3 and y= 5
=5(-3)(5)+(-3)-4
=5(-15)+12
= -75+12
= -63
3.)
a= 5,b= 3 and c=10
4.) 3(xy+6) ; x=-6 and y=1
=3((-6)(1)+6)
=3(-6+6)
=3(0)
=0
5.)
x=-3 and y=-8
= 1
hope it helps <33
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Answers & Comments
1.) 3x+5 ; x= 2
=3(2)+5
=6+5
=11
2.) 5xy+x-4 ; x=-3 and y= 5
=5(-3)(5)+(-3)-4
=5(-15)+12
= -75+12
= -63
3.)
a= 5,b= 3 and c=10
4.) 3(xy+6) ; x=-6 and y=1
=3((-6)(1)+6)
=3(-6+6)
=3(0)
=0
5.)
x=-3 and y=-8
= 1
hope it helps <33