Question

a)4x+12=-4+3x+10
b)2x-1+8x=15+9x+27
c)-x-19+3=-2x+40+21
d)-10+4-5+12+7-8
e)15+(-1)-7-(-10)+30-(-9)

Answer 1

a)4x+12=-4+3x+10= 74

b)2x-1+8x=15+9x+27= 361

c)-x-19+3=-2x+40+21= -75

d)-10+4-5+12+7-8= 0

e)15+(-1)-7-(-10)+30-(-9)= 56

Espero ter ajudado