00:01
So two days ago i was charged $10 for one espresso, which has, i'll denote with x, plus two lattes, plus one mocha.
00:18
And yesterday i was charged 1450 for two espressos plus three lattes and one mocha and today they charged me $22 for three espressos and four lattes and two mochas us.
00:46
Then what is the price of an espresso? the price of a latte and the price of a mocha.
01:11
So we'll have a system of equations then as i just wrote out.
01:17
And now we want to see here, here, clean this up for a.
01:22
I have 1x plus 2l plus 1m is 10.
01:31
2x plus 3l plus 1m is 1450.
01:38
And 3x plus 4l plus 2m is 22.
01:46
And i can write this then as 121.
01:50
1, 2, 3, 1, 3, 4, 2 times xlm is equal to 10, 14, 50, 22.
02:06
We'll call this a.
02:08
We'll call this x...