Solve the Solve the simultaneous equations 2x+3y=20 x+5y=31

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Step-by-step explanation:

Given

Required

Solve for x and y

Make x the subject in the second equation

Substitute 31 - 5y for x in

Collect like terms

Solve for y

Substitute 6 for y in

a) y = -3x +2

b) y = 1/2x -6

these 2 can be combined into one equation.

-3x +2 = .5x -6

8 = 3.5x

x = 8 / 3.5 = 2.2857142857

y = -3 * (8 / 3.5) +2

y = (-24 / 3.5) + 2

y = -4.8571428571

step-by-step explanation:

“a term can be a signed number, a variable, or a constant multiplied by a + sign or j sign. in , the terms are 5x , 3y and 8. when a term is made up of a constant multiplied by a variable or variables, that constant is called a coefficient.” i hope this you.