exam Maths Puzzle Numerical Ability

Solve by the substitution method.

4x+7y = 35

-3x+y = 30
Can someone please help me with this.

Read Solution (Total 0)

exam Other Question

I have another absolute value problem that is stumping me. We are supposed to solve for x:

|3x| = |x-1| + 2 .

Thank you for your help.

welljesse
f(x)=5x-1


f(x-h)-f(x)
___________
h