How do i go about solving the following system of equations by elimination?

4m-3n=27 and 8m-6n=18

(This was meant to be my previous question, but i accidentally put in the one I already solved for)

How about this question? 11/10 x 9/7

You record a temperature of 0.75 °C. Is this a positive or negative temperature?

A 4 sided shape has interior angle of 71°,200°,77° whats is the last side?

Find the surface area of a cube if each side is 2 feet long.

Find the volume of a sphere with a radius of 9cm.

To start a board game, the player who rolls two sixes gets to go first. What is the probability that a player will roll two number cubes and get two sixes? ) Intro Done

Solve using elimination 3x-4y=9 and - 3x+2y=9

Rick bought 3 shirts for $18 each, 2 pair of socks for $3.99 a pair, and a pair of slacks for $45.00. The sales tax rate is 8.5%. How much did he pay.

What decimal is equivalent to 22 out of 25

A participant in a 21-mile walkathon walks at a steady rate of 3 per hours. He thinks, "the relationship between the number of miles left to walk and the number of hours I already walked can be represented by a line with slope - 3.