book Maths Puzzle Numerical Ability

hi i need some help please 3a+7b-10b+6c=

Read Solution (Total 0)

book Other Question

the question is:
graph the info by drawing tf in the y axis and tc in the x axis and plot the information on freezing and boiling temps as points on the graph.
and it gives us a find the slope and y intercept of the line and graph

x + y = 0

Thanks