cordeliacarstairs001 cordeliacarstairs001

09-03-2021
Mathematics

contestada

please please help me
solve 4x+9y= 61 and 7x+6y=58 by substitution

Respuesta :

aaravsha0495 aaravsha0495

09-03-2021

Answer:

what?

Step-by-step explanation:

Answer Link

TcScott17 TcScott17

09-03-2021

X=-9y+61/4.

Now substitute and solve
7(-9y+61/4)+6y=58

Combine like terms

-63/4y+427/4+6y=58
-63/4y+6y=-195/4
-39/4y=-195/4
-39y=-195
y=5 now input into other equation
4x+9*5=61
4x=16
x=4

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