Question

Poderiam me ajudar?
Calcule
A) 3×+2=45
B) 2×+4-3×=400
C) 3×+3=90
D) 9×+2=100

Answer 1

Olá!!

A)
3X+2 = 45
3X = 43
X = 43/3



B)
2X+4-3 = 400
2X+1 = 400
2x = 399
x = 399/2
X = 199,5


C)
3X+3 = 90
3X = 87
X = 87/3
X = 29


D)
9X+2 = 100
9X = 98
X = 98/9