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
CROSS MULIPLY THE 2 X THEN ADD THE 14
Answer: tap on that line at the zero then above the zero press one
Step-by-step explanation:
Answer:
second one!
Step-by-step explanation: