First u do 1+3+4 which gives u 8...then divide it from the number 56 which gives u 7..then after do (multiplication) 1*7= £7...then 3*7=£21 and then 4*7=£28....ur answer is £7.00, £21.00 and £28.00.....to check them if it's right u could do 7+21+28 which gives u exactly £56.00...so yap hope this helped u :)
A=LW
L=5+2W
A=50
50=LW
sub 2W+5 for L
50=(2W+5)W
answer is the 3rd equation
Answer:
4x−5y=−10 hopefully this helps
