Question

simplifique as equações: a)9X-2=4+18 b) 4X-18+3X=10 c) 2(X+5)-4=26 d) 2X-10+7X+10=180

Answer 1

a) 9x-2=4+18
9x=18+4+2
9x=24
x=24/9÷3
x=8/3

b) 4x-18+3x=10
4x+3x=10+18
7x=28
x=28÷7
x=4

c) 2(x+5)-4=26
2x+10-4=26
2x=26-10+4
2x=20
x=20÷2
x=10

d) 2x-10+7x+10=180
2x+7x=180
9x=180
x=180÷9
x=20