exam Maths Puzzle Numerical Ability

using substition
y=3x+5
2y-6x=4

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exam Other Question

-6x/9-6=
-5x+(-50)=-40
2.3=-3.2+x/5=
4x+4=20 using number sense
m-9.4<-37.2=
x-3<_-12=
y+4<__-4
m+9.8<-63.9=
y+4<_3=
This is a study guide for homework to turn in three times the quantity of 2 plus a