Question

1.resolva as equaçoes

a) 6x-24+72=4x+60-80

b)25x-60=20x-190

c)7x-x+78=4x+90-140

d)120+x=700-456+190-x
presciso pra hj pfv alguem ajuda

Answer 1

a) 6x-4x=60-80+24
2x= -20+24
2×=4
×=4/2
×=2

b)25×-20×=-190+60
5×=150
×=150/5
×=30

c)6×-4×=90-140-78
2×=-50-78
2×=+28
×=28/2
×=14

d)+×+×=700-456+190-120
2×= 244+190-120
2×= 434-120
2×= 314
×=314/2=157