It's so easy just keep on reading it
3 x 15 = 45
3 x 14 = 42
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There are 14 packages.
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x = 42/3
-----> 3x=42
The answer you're looking for is, x = 3,-5
Answer:
10
Step-by-step explanation:
multiply the first equation by 2 in order to be able to cancel out the -4z and the 2x
4x-30y=-20
-4x+5y=-30
50y+5y = -20+(-30)
55y=-50
The answer to this question is 10000
