Question

resolver los siguientes ecuaciones
a)2x + 5 • (3-2)=x+10
b) 2•x3 +6=8
c) 90+2x=3•(x-7)

Answer 1

a)2x + 5 • (3-2)=x+10
= 2x +5 ×(1) = x +10
= 2x + 5= x + 10
2x - x = 10 - 5
X = 5

b) 2•x3 +6=8
= 2x³ = 8-6
= 2x³ = 2
X³ = 2/2
X³ = 1
X = ³√1
X = 1


c) 90+2x=3•(x-7)
90 + 2x = 3x - 21
90+ 21 = 3x - 2x
111= x
X = 111