Question

1. Indique a incógnita de cada equação
a) 2x - 3 = 18
b) 4y = 30 - 21
c) 5z - 6 = z + 90
d) m + 4 = 10


Respostas por favor.

Answer 1

a) 2x - 3 = 18==> 2x = 18+3 ==> 2x = 21 ==> x = 21/2
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b) 4y = 30 - 21 ==> 4y = 9 ==> x = 9/4
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c) 5z - 6 = z + 90 ==> 5z-z = 90+6 ==> 4z = 96 ==> z = 24
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d) m + 4 = 10 ==> m = 10-4 ==> m = 6