Question

1) x + 1 = 9
2) a – 8 = -10
3) y + 3 = 3
4) -7 = b + 50
5) 128 + z = 900

Answer 1

Resposta:

x+1=9

x=9-1

x=8

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a-8=-10

a= -10+8

a= -2

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y+3= 3

y= 3-3

y=0

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-7= b+50

-7-50= b

-57=b ou b= -57

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128+z = 900

z= 900-128

z= 772