Question

ayuda necesito resolver esta cuenta 3.x+1=90-4.5

Answer 1

$3x + 1 = 90 - 20 \\ 3x + 1 = 70 \\ 3 \times = 70 - 1 \\ 3 \times = 69 \\ x = 69 \div 3 \\ x = 23$

Answer 2

3x+1=90-4.5
3x+1=70
3x=69
x=23