21. Solve for x and y using substitution method.
x+2y-3=0; 3r - 2y + 7 = 0
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Answer:
x=-1 y=2
Step-by-step explanation:
re arrenging your wrong equation
x+2y=3 eq(l) & 3x-2y=-7 eq(ll)
let eq(l):- x=(3-2y)eq(lll) substi in eq(ll)
therefore:-3(3-2y)-2y=-7
8y=16 therefore y=2
substi these value in eq(lll)
therefore x=3-4=-1
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