exam Maths Puzzle Numerical Ability

I need help to solve this problem seems I can get the right answer
Solve
3(x - 2) + 7x = 8x + 0

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exam Other Question

Write the Equation of the line and graph:

m= -2/3, through the point (-2, -4)
Please help me confirm I am doing this correctly:
4(2(-5x+y)-y)-10(y-4X) with the outside set of parenthesis being brackets