Reasoning Solve the system of linear equations using substitution. Use pencil and paper. Which expression would be easier to sub

Question

3 years ago

12

stitute into the other equation, in order to solve this problem? Explain your reasoning. x = 4y - 2 x + 4y =7

2 answers:

viktelen [127] · Answer 1 · 2022-08-30T11:27:28+03:00

6 0

Answer:

yes

Step-by-step explanation:

spin [16.1K] · Answer 2 · 2022-08-30T09:04:06+03:00

Answer:

x = 5 /2 , y = 9 / 8

Step-by-step explanation:

x = 4y - 2 ....... (i)

x + 4y =7 ....... (ii)

Substituting eqn (i) into eqn (ii);

(4y - 2 ) + 4y = 7

4y - 2 + 4y = 7

8y = 7 + 2 = 9

y = 9 / 8

substitute y = 9 / 8 in eqn (i)

x = 4 (9 / 8) - 2

x = 9 / 2 - 2

x = (9 - 4 ) / 2

x = 5 / 2