MATH SOLVE

3 months ago

Q:
# AFLATI 2 NUMERE STIIND CA AL DOILEA NUMAR ESTE DE 7 ORI MAI MARE DECITPRIMUL IAR SUMA DINTRE DUBLUL PRIMULUI NUMAR SI TRIPLUL CELUI DEAL DOILEA ESTE 460

Accepted Solution

A:

Answer:The numbers are 20 and 140Step-by-step explanation:The question in English is
Find 2 numbers knowing that the second number is 7 times greater than the first, and the sum between the double of the first number and the triple of the second is 460Define the variablesLetx ----> the first numbery ----> the second numberwe know that[tex]y=7x[/tex] -----> equation A[tex]2x+3y=460[/tex] ----> equation BSolve the system of equations by substitutionSubstitute equation A in equation B[tex]2x+3(7x)=460[/tex]solve for x[tex]2x+21x=460[/tex][tex]23x=460[/tex][tex]x=20[/tex]Find the value of y[tex]y=7x[/tex] Β ----> [tex]y=7(20)=140[/tex] The numbers are 20 and 140