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sierralynnbaldp16d4b
25.02.2021 •
Mathematics
What is the value of x
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Ответ:
x- first number
y- second number
FORM THE TWO EQUATIONS:
x + y = -149
x = y-5
PLUG IN FIRST VALUE TO FIND SECOND (order you plug in doesn’t matter):
(y-5) + y = -149
SIMPLIFY:
(y-5) + y = -149
2y -5 = -149
2y = -144
y = -72
PLUG IN SECOND VALUE TO FIND FIRST:
x + y = -149 —> y = -x-149
x = (-x-149) -5
x = -x -154
2x = -154
x= -77
WRITE FINAL SOLUTION:
(x,y)
(-77, -72)