Answer:
2x + 3y
Step-by-step explanation:
10x + 7x - 15x + 3y=
17 x - 15 x + 3y
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When -2x+y=1 and y=-x+4, x = 1
x=5
Step-by-step explanation
3.18x+2.6+0.9x+x=28
3.18x+0.9x+x+2.6=28
5.08x+2.6=28
5.08x+2.6-2.6=28-2.6
5.08x=25.4
hope it helps
