philiphobe philiphobe

04-03-2022
Mathematics

contestada

Solve this system of equations using substitution.

Solve this system of equations using substitution class=

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akabane009 akabane009

04-03-2022

Answer:

y = 30, x = 10

Step-by-step explanation:

y = 3x...eqn i

x = -2y + 70...eqn ii

Now,

Substituting eqn i in eqn ii,

x = -2y + 70

or, x = -2(3x) + 70

or, x = -6x + 70

or, x + 6x = 70

or, 7x = 70

so, x = 10

Now,

y = 3x = 3 * 10 = 30

Answer Link

sunday4d2021 sunday4d2021

04-03-2022

Answer:

y=3x

x=-2y+70

x=-2(3x)+70

x=-6x+70

collect like terms

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