2x+3y=-4 7x-5y=6 solve substitution method
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Step-by-step explanation:
2x +3y = -4
2x =-4-3y
x= -4-3y÷2
substitute x value in eq 2
7(-4-3y÷2)-5y =6
-28-21÷2-5y =6
-49÷2-5y=6
-5y=6+49÷2
= 12+49÷2
= 61÷2
-5y =30.5
y=-6.1
substitute y value in eq 1
x= -4-3×-6.1÷2
x= -4-3×-3.05
= -7×-3.05
= 21.35
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