Enter the x-coordinate of the solution to this system of equations. by = -43 + 20
23 + 4y = 12
The x-coordinate is ???

An appliance store sells a washer-dryer combination for $1800. if the washer costs $300 more than the dryer, find the cost for each appliance.

In triangle △abc, ∠abc=90°, bh is an altitude. find the missing lengths. ac=26 and ch=8, find bh.

Ling is using fraction strips to add 2/3 and 7/12's the sum is one whole plus how many twelves?